itch.io

Well, 

1. I like :

 a. Seeing multiple enemies unique to each area.

b. Fighting various bosses (except of one).

c. Finding secrets. Well, only three but better than nothing.

d. Getting reward from clearing a room. It gives incentive to return and defeat all enemies in all rooms.

2. I dislike:

a. Having toooo many rooms with clear all enemies to progress rule. This is metroidvania not linear game.

b. Being forced to earn max health before entering ancient cave. Why?!? any player would do that on their own so there's no need to force this.

c. Having a boss fight which is just survive + deus ex machina.

d. Getting gems which aren't as good as they should be. Orange bullets should appear as default shot after gaining orange gem. Yellow shot should allow hurting paralyzed enemies. To balance this, reduce the size of the shot and increase the HP cost. And bosses are immune to paralyze shots.

e. Requiring getting other gems as requirement to get yellow gem. It is ridiculous. Player should be allowed to get it before the others to give choice.