Whew! beat zone 100. I know people will dock you on the visuals, but I only took off 1/2 star for that because the only problem that gave me was having it hard to see some of the enemy blinking orb attacks and where they were with the purple background. The other gameplay elements were very good. Whenever I had the thought like "wish I had more keys" or "wish I knew what the door was" or "man this basic attack sucks" I would eventually find items that solved all those problems. Also have it so you get the item for or you start off with showing previews of what items do before getting them. The lightening is pretty OP, lets me pretty much stun lock all the boss fights. Letting the enemies shoot through obstacles while I can't is pretty annoying.
What was the point of the axe?
The enemy attacks gets repetitive including the bosses. Maybe change it up like they get your secondary attacks too except colored red to distinguish from yours, but that might make it very very difficult.
Add a small story line, like centaurs invaded and enslaved your people or something.
Took a full star off for the ending. srsly wdf m8?