I absolutely love this game. As far as an early access goes it is totally worth the money as is. I've been playing Aska as well and this has a similar feel though with dwarves. I very much enjoyed the relationship between Tru and the dragon, and i'm looking forward to seeing that develop. The city building aspect is pretty good, I just wish I could build bigger Dwarven cities, expand expand expand!
I am so excited to see how it develops and grows, with the foundation it already has it has become one of my favorites in my library so far. A few comments on some of the things I saw in other comments and my own experience.

1. Village is under attack, as far as I can tell the only village that gets attack is the one on the island you are currently active on. They will assault your walls and attempt to go for the guts of your town. If you walls are thick enough most defenses can hold of most waves.

2. If you are wondering how much mana power you have access to check the nearest mana well. It will inform you of your current excess mana. Didn't learn that till I finished the game.

3. Don't feel rushed to bring in the colonists. You can take your time and adjust your defenses. Often times you can find choke points to limit the amount you have to build. Even if you build in the open watch where the monsters go during storms and you'll know where to concentrate your defensive towers.

4. It seems better to build the mana connectors and then attach the defensive towns directly to them. If you connect your mana lines via the towers the monsters can disrupt your entire power flow by destroying a single defense tower. They don't attack the mana lines or nodes, so its easy to rebuild, if you do its common to have power cut off during an assalt.

5. The Airship is a lot of fun to fly, looking forward to seeing what sorts of upgrades you can make on it in the future.

6. DONT FORGET about your airship pads, they will make your life so much easier when it comes to transportation.

7. There have been a few glitchy things, but a quick save and load fixed almost all of this.

8. Get the hammer in the begging quest. It helps alot. Though a note on the weapons, I bought each hammer upgrade but was only able to use the ancient hammer, either because its the strongest or because of a glitch. Don't know.

9. Tru can't seem to swim, but the little dragon handles it beautifully, don't hesitate to switch between the different playable characters.

10. I would ask for a key for all the symbols you can see on the map, so that the player has a better understanding of what their looking at.

11. Quest lines can be frustrating, not understanding what you're supposed to do or how to go about, but this is a minor issue. I was able to puzzle out everything.

12. Its pretty cool that you can explore the other underdeveloped islands. It takes awhile but the sights are really pretty.

Thats all for now! Will update if I run into or think of anything else.
Amazing game, cant recommend enough!