These achievements will unlock eventually. Just proceed in story mode to do so. There are 21 such achievements in all, covering a fourth of all achievements.

Secret: Clear "Story" mode`s volume 1 chapter 4

Mystical humanoi: Clear "Story" mode`s volume 2 chapter 4

Demonic instructor Sofia: Clear "Story" mode`s volume 3 chapter 2

Hunter and Fox: Clear "Story" mode`s volume 4 chapter 4

What a horrible thought, stop it!: Clear "Story" mode`s volume 5 chapter 4

The tournament between the academies: Clear "Story" mode`s volume 6 chapter 2

Never give up!: Clear "Story" mode`s volume 7 chapter 4

Temporary way: Clear "Story" mode`s volume 8 chapter 4

The occupation of the Institute: Clear "Story" mode`s volume 9 chapter 4

L-protein: Clear "Story" mode`s volume 10 chapter 3

The quick victory: Clear "Story" mode`s volume 11 chapter 4

Join the BWMG: Clear "Story" mode`s volume 12 chapter 3

Charming hero: Clear "Story" mode`s volume 13 chapter 3

The reward of 100 million? You can quickly get rich!: Clear "Story" mode`s volume 14 chapter 4

Sandhurst: Clear "Story" mode`s volume 15 chapter 4

Together with the traveler?!: Clear "Story" mode`s volume 16 chapter 4

Sterope: Clear "Story" mode`s volume 17 chapter 3

A strange cooperation: Clear "Story" mode`s volume 18 chapter 4

The secret service: Clear "Story" mode`s volume 19 chapter 4

BWMG: Clear "Story" mode's volume 20 chapter 2

Uninvited guest: Clear "story" mode's volume 21 chapter 1

To earn these achievements one must have all maidens, mentioned between the brackets in the description, in a squad. Usually having them in your squad is enough to unlock the achievement with one exception (see below). With these unforgiving requirements they'll probably be the last one's you'll unlock. HOWEVER you shouldn't wait until the last moment to start gathering the maidens. I'll put a handy list of tanks you need and how to get them. Although I've only put whether or not they get dropped and which maidens are needed for their first crafting method. (The maidens in orange can be found in the "special" tab). This way you can start gathering and levelling the pre-required maidens. Earning and levelling them may take quite some time if you haven't started doing so before getting all other achievements. An other way to earn maidens is to produce them in the BWMG depot. Spending better gear and materials increases the maidens rarity but the outcome is still largely random. There are 13 such achievements in all.

"Citrus" squad: Assemble a squad(T-34M，T-43，СТ T-28)

Black lightning: Assemble a squad (Tiger mod. E，Panther mod. A，Panther mod. G)

Arrow of fate: Assemble a squad (ПТ-САУ Archer，САУ Birch Gun，StuG III Ausf. F)

"Frost" squad: Assemble a squad (ASU-85，М40，T-60/BM-8-24)

Star of tomorrow: Assemble a squad (T-44-100，M24，T-60)

Victorious: Assemble a squad (Churchill Mk-IV，Churchill Mk-VII，Churchill Mk-VIII)

"Unwavering" squad: Assemble a squad(T95 heavy，M36 Jackson，T17E1 Staghound "Mk-I")
----> ATTENTION: T95 does not exist, instead you'll need the "T28 Super Heavy Tank". (with thanks to BierVampir and Explorer)

"Rangers" squad: Assemble a squad (M103A2，M6A1，SPG M37)

Death comet: Assemble a squad (A34 Comet，T-46，Grant Mk-VII)

"Watchman" squad: Assemble a squad (PzKpfw III mod. L，ISU-122，♥♥♥♥)

Tulip: Assemble a squad ( B.Châtillon 25t，БТР-50ПА，SdKfz251-9)

"Moscow" border group: Assemble a squad(KV-1B，KV-2，KV-5，KV-85)


The achievement "Instructors of 3 academies" is the sole exception to just having all three maidens in your squad. You'll need level "IS-2М", "Churchill AVRE" and "M26 Pershing" to lv 91, which will require 3 medals of fate. (with thanks to prot0mega and BierVampir)

Instructors of 3 academies: Assemble a squad (IS-2М，Churchill AVRE，M26 Pershing)

To earn these achievements you'll need to win a certain amount of clash mode battles. However, these achievements are linked to the daily challenges and thus for all of them to unlock you'll need to win 60 battles before the reset. In other words, you'll have a maximum of 24h to win all 60 battles. But that's not all, your battle count will reset when you lose as well, so you'll have to win 60 battles without losing in a relatively small period of time. After winning a battle your rank goes up and you will be set up against harder enemies. Therefore I suggest going for the achievements after you have a strong enough squad that could wipe the floor with your average high level foe. After winning a battle you'll earn quite a lot of coins so don't be afraid to refresh multiple times until you're confident about the odds. When you run out of diesel you can buy more with G-Corn in the store, it's only 1 corn for 20 diesel (or two battles). Therefore it's recommended to safe up enough beforehand. There are 9 such achievements in all. Covering quite a large portion of the total achievements.

Not bad!: The first victory in the |Clash| mode

Am I the new Lord?: 3 wins in "Clash"

A great winning streak: 5 wins in "Clash"

10 wins: 10 wins in "Clash"

Another victory! You are superb!: 20 wins in "Clash"

Your silver is mine!: 30 wins in "Clash"

Became more power?: 40 wins in "Clash"

Invincible General: 50 wins in "Clash"

Unstoppable: 60 wins in "Clash"


A screenshot of a challenge saying I've completed 0/5 battles:

In this section I'll talk about the two types of cumulative achievements. If you plan on going for a 100% completion rate then don't bother farming these. You should get them eventually as they are not that hard to get.

First of all there are the Maidens. To unlock all achievements of this type you'll need to reach a total of 200 different maidens. FYI, it's not possible to get a maiden twice. If, by completing missions, you earn yourself another copy of a maiden, you'll get her in the form of a box called "attire". Attires can be used on any maiden and will increase one of her core stats. You can increase every stat 12 times before hitting the limit.
Back to the achievement: there are different ways of obtaining maidens. First way is to earn the maiden as a drop after completing certain battles. Right before a battle you'll see which maidens can be earned, these will look like boxes as mentioned above. A second way is to craft maidens. You'll usually need resources that can commonly be found in the special assignment missions,
as well as one or two specific maidens and commander at a certain level. A third way to earn maidens is to use G-iron in the store. For 120 G-iron you can get random equipment but maidens as well. Watch out that G-iron is fairly rare and the drop rate for maidens pretty low. After reaching headquarter lv12 you'll unlock the BWMG depot which produces maidens at a fairly low price (slowly replenishing materials and 1 attire). However, producing a maiden takes time, is random and will sometimes not grant you a maiden at all. Even so this is one of the best places to earn maidens.There are a total of 4 achievements earned by collecting maidens.

50! Collector!: Collect 50 maidens

100! Expert collector: Collect 100 maidens

150! The eminent collector: Collect 150 maidens

200! The genius!: Collect 200 maidens


Secondly, there are silver coins to be collected. To unlock all these achievements you'll need to reach a total of 5.000.000 silver. This means having that certain amount of silver in possession at one time. To earn silver you should invest on your base. Get your headquarters high enough and you'll be able to upgrade your silver mine (which lets you claim silver more quickly) and your silver vault (which increases the maximum amount of silver that can be stored). There are a total of 5 achievements that can be earned by collecting coins.

First salary!: Collect 30000 silver coins

A thousand journey takes every step: To collect 100000 silver coins

More! I need more silver!: To collect 500000 silver coins

I'm rich!: To collect 1000000 silver coins

Rich man: To collect 5000000 silver coins

These achievements are not earned by completing missions but rather upgrading buildings in your base. To get all of the achievements below you'll need your headquarters at level 20 and your excavator, silver vault (called Склад серебра in the achievement), naval port and BWMG depot at level 1. Except for the headquarter ones and BWMG depot you'll earn the other three very quickly. To unlock the BWMG depot you'll need to upgrade your headquarters to level 12 first. To level up your headquarters you'll need your commander at a high level, the specific level I don't know. There are a total of 8 achievements in this section.

Excavator
The achievement of the 1st level "Excavator"

Accumulation of silver
The achievement of the 1st level "Склад серебра"

The opening of the naval port
The achievement of the 1st level "Naval port"

The production of new mechanisms
The achievement of the 1st level "BWMG Depot"

Not bad for a newbie
Headquarters has achieved a 5-level

The improvement of staff increases opportunities
Headquarters has achieved a 10-level

This is the beginning of a very long journey
Headquarters has achieved a 15-level

The Headquarters is above all
Headquarters has achieved a 20-level

There are three different types of achievements in which levelling is required. For a total of 6 achievements. Since these may take some time to be completed it's better to invest in them early on.

First of all, there is one achievement in which you need to reach level 10 as your commander. This achievement is nothing more than a joke as you'll earn it very soon simply by playing the game. Experience can be earned by completing battles, as completion reward and can even be bought in the port. However, you'll have your commander at level 10 long before getting access to the port. Note: although this achievement is easy to get, you'll need a high level commander for a lot of other stuff such as upgrading your headquarter, unlocking maidens and making weapons.

Well...is that better?: Commander reached up to 10th level


Secondly, there are two achievements for levelling weapons to level 10. To level weapons you'll need codon. Codon can be obtained by selling equipments or in small amounts by completing levels.

Faith in the heat shells: Heat shells reached 10th level

Faith in the rockets: Rocket-Propelled reached the 10th level


Lastly, you'll need to reach level 90 with certain high-tier maidens. The name of the maiden that needs levelling is mentioned in the description. However you'll need a high enough commander and other maidens at certain levels if you wish to unlock said maiden.

Famous brand high-heeled shoes: Sd.Kfz.234/3 reached level 90

White parrot: B.Châtillon 25t reached level 90

Special high-heeled shoes: Sd.Kfz.234/1 reached level 90

Here I'll talk about a few achievements that will make your maidens stronger. You can install guns and equipments, you can use food to level up your maiden and use attires to enhance her core stats. Both food and attires disappear after being used. However, equipments can be freely exchanged between maidens and guns can be switched although it will cost you a fee of silver to do so.

This first achievement requires you to install an equipment. You can get equipments during missions. See: the upper yellow cirkel in the screenshot.

That`s much better!: The first equipment installation

The next achievement requires you to install a gun. You need to research the gun first in order to buy and use it. Once you buy one and switch you'll have to pay a sum of silver to install it again. However, once you research the gun you won't need to spend codon and other materials anymore. See: the lower yellow cirkel in the screenshot.

Size is also very important!: The first installation of gun


The next achievement requires you to use food on a maiden to level her up. First you'll need food which you can buy in the port or get as a drop during missions. You'll also need to pay a sum of silver equal to the experience gain. Certain types of foods can give a maiden a signiciant boost so use wisely.

Becoming stronger?: First time upgrading Metall-maiden


This achievement requires you to enhance a maiden by using an attire on her. As mentioned before, attires can be obtained as a drop in case you already have the maiden that you would originally have obtained as drop. The face of the original maiden will be visible on the attire box, but any attires can be used on any maiden.

Strengthening: First enhance


Although the next achievement doesn't make you install anything (yet) it still belongs in this section as you'll need to upgrade a piece of equipment you already own. The upgrade panel can be a little tricky to find, so follow the screenshots below. First go to the warehouse (lager) and then pick the second button. There you'll find your equipments. If there's a green arrow next to it, you have enough materials to upgrade the part. Besides the material you'll need a bit of codon too.

The initial modernization of equipment: The first modernization of equipment

Here are the last few achievements that don't quite fit in any other category. They range from easy to really hard to earn. But if you complete the other achievements you should earn these too one way or another. Except for the last one, since you'll need gold to buy a specific item in the shop.

For this achievement simply win a battle in story mode.

The easiest: The first victory in the |Story| mode


I'm not sure about this one, if you do know please let me know in the comments. However, this is one of the most earned achievements so you'll probably get it by continuing the story.

Gorgeous debut: The launch "Panzer waltz


Completing a few story chapters will grant you an open spot for a fourth maiden in your squad. When you assign one you'll earn the next achievement. Keep playing to open a spot for a fifth maiden after the 2nd volume and a sixth maiden after the 6th volume, then you'll earn the next two achievements respectively.

Squad formed: 4 members in the squad

Not the limit: 5 members in the squad

The squad is ready: 6 members in the squad


Use codon and research your first few guns. You can upgrade other parts later but they'll take some time to unlock. The first upgrades are rather cheap so don't be afraid to spend a few dozens of codon.

First steps in science: The first advance in science and technology


Earn your first gold rarity maiden. When browsing through your available maidens you can see their rarity by the color of the border they have. Blue is most common, next comes purple and gold is last.

O...Orange?: The first transport


Keep levelling up a purple or gold rarity maiden. When she reaches level 35 and the commander is level 25, you can promote her to 2 stars. This will cost you 800-2000 codon and 20-44 materials.

In the future you will become a General!: The first upgrading maiden up to two stars


Keep levelling up a gold rarity maiden. When she reaches level 70 and the commander is level 48, you can promote her to 3 stars. This will cost you 12.000-16.000 codon and 320-440 materials.

Achieving 3 stars: The first improvement of Metall-maiden up to 3 stars


When you've unlocked the BWMG depot after reaching headquarter lv12 you'll need to start a production with 999 of each material. Materials increase slowly but without limit, so you can either wait a month or two without spending materials or upgrade the depot to increase the production of materials and leave the achievement for later.

Sequence number 2997: To use this recipe 999x3 in the "Depot BWMG"


For this achievement simply watch the credits and look out for a suspicious button. It's not that hard to find.

To plunging into the world of fantasy: Click to view the squad


To earn this achievement you need to get a maiden to level 90 and then give her a medal of fate. By doing so, her max level will increase to 99 and she'll earn additional benefits. One will be given for free after beating volume 18 but others can be bought for large sums of either silver, corn or gold. I recommend you spend the medals of fate on IS-2М, Churchill AVRE and M26 Pershing if you want the achievement "Instructor of 3 academies".

Sweet army life: First awarding


To earn this achievement you'll need to buy Chaffee's mic in the shop. It costs 650 gold so you may want to hold on to your gold until you have enough. Gold can be earned by completing certain challenges. Or, if you're impatiened and/or want to support the dev's, you can buy gold in the shop.

I'm your fan: You get "Chaffee Mic" emblem