This is great! There’s a puzzle aspect to figuring out where and when to spend your eyes/crystals to reach as far as possible (plus revisiting the levels).
Spoilers below
Beating all of the enemies in both maps has me at 36 eyes - is this the max? Another comment says that they have 92, though I’m not sure how that is possible. BTW where can I access the third level - is in in the .zip?