ok, i seriously tried to 100% this game
but eighter i cant grasp some mechanics, or the game is just one huge buggy mess

i always die in the later stages due to stuff like:
my speed suddenly is reduced to 0 - permanently from the stage it happens onward
monsters are invinicible in a stage, they just take 0 damage and swarm me
my skill is unlimited spamable, but then glitches the char out of the map
Skills stop working properly (eg HP on kill gives no HP back)

is anyone else running into these problems / knows a fix?
This really is unplayable as it is