To be honest - this guide is unnecessary.
Just play the game, you'll easily figure out everything by yourself.
But here's a little motivation:

Nothing to say about these. Just stroll around a bit and they'll unlock by themself.



There's but 1 reason to level up in Himno: You need a certain level to release certain wisps. Each wisp will tell you the required level.

Note that you can level infinitely per district. Collecting the yellow gems is definitely the fastest way, but if you're only 1-2 levels short of a wisp and don't want to continue on to the next district, just keep jumping, which rewards you with 2exp per jump, or dashing, for 4exp per execution.

Wisps are those little fellas. For a full list of their effects take a look at the wisp section above.






You need to find and use 15 dash runes for this one, across several runs.
Activating the same rune for 15 times won't unlock the achievement..

The white dash boosters aren't working for this achievement, either. You need to find these:






All three of them need to be done in total, not in a single run.
Well, just keep playing. Took me about 2 hours.

Have a relaxing time with Himno! =)