hiya , sadly ive already given up on this - not because its bad , just because its too flawed for me .... checkpoints that respawn you with about 6 enemies attacking you is never good , not respawnimg with full health also sucks , enemies off screen firing at you so there are random bullets coming at you is also a pain ! and some of the enemies placements make it really hard to get a shot in before they hit you ...
struggled with the jump mechanics at a few points as well , especially the disappearing platforms , there seemed to be some sort of delay limiting the jump height so often ended up missing them and ending up in the acid below
finally , losing the upgrade you had before dying makes it extremely difficult to carry on forward - the upgrade was there for a reason im guessing ?
so moving forward is almost impossible without it and i havent tried backtracking so im not sure if they are gainable again ?
as i said , not a bad game at all - i like the movement , flow and style but not the gameplay