The idea is really cool and interesting and it was fun to find out the mask mechanics. The centipede was pretty strong but with the 2 masks i was invincible by poisoning and armoring infinitely :D he just slowly died and never got past my armor :D
This reminded me a bit of megaman, where kill order of the bosses was important too.
My kill order was manticore, scarab, centipede.
The pixelart is great and the gameplay is fun.
Great Game :D