Dinonykos, I like your included "help" in the game. Most games have like a demo level you play thru that teaches you various options/tricks you can use to finish your goals, and the part describing opening chests is a good move. I was thinking of this sort of thing after seeing something similar while playing a turn-based 3d combat game called Gladius where you make a school of gladiators to compete in the roman gladiator arenas.
If you have something that is a little different from the standard GoldBox style then it seems you should have some explanation as to how this works.
ST
ps and the artwork is superb too