Really good game! I can see that you have put a lot of work in it.
The music is great. The art is pleasant and puzzle fun. It's a bit hard to grasp at first but nothing to crazy either. Maybe introduce each new skills as you go through the levels could help.
I encountered a bug in level 2 where my character was rotating in space after attacking one of the three remaining ennemy who was in "charge up" mode. I maybe did a double tap on an ability or something. You might be aware of it already but just in case.
Be proud of your work !