Great feedback. Sorry about all that and thank you for playing. It was much harder, so I toned it down a lot, and was worried it would be too easy, but I built it and played through a lot so it's hard to gauge.. I think the player disappearing is definitely not working as intended on some people's machines, I see the problem in how it done and can fix that pretty easily. The tank pinching, you should be able to jump out of it (see video). The third phase it's easy once you see the laser pattern. And for the hands, dodge the pounds and jump up between the head and fist on either side during the sweeps, I left the hits pretty low on that phases since I thought it would be boring to go through too many of the same basic pattern. Here's a video fighting through the whole thing (it shows how to jump out from the tank pinching and beating the third phase without taking any damage):