Hey, I really liked the idea of a puzzle game which has dying to get to the next part as the game mechanic. I think this idea has a lot of potential. I made some notes while I was playing as feedback to give you on how I experienced the game. I did play the first part a few times a few times and here's what I have to say.
Notes:
Collision on the player bodies can block doorways sometimes
I think that the deaths should be more entertaining in a way but I like the idea of dying and using that to get to the next stage. It makes for a fun puzzle mechanic.
Maybe having funnier deaths or something could add value, or some kind of other interesting ways to die
it wasn't clear to me why I needed to go to the table first to go to the bridge. I tried ignoring that first keycard room to save the card then realized that the table was meant for opening the bridge. On my first playthrough I didn't realize that's what I did when I went into the hologram table room. I liked how the colour changed but maybe having it say what you're doing then having it be an interact key to activate it could help convey to the player what it is they are doing.
also walking should be faster. I've closed the game on accident a couple of times and running back to where I was felt pretty long. Even just running back to where you left off after the bridge part feels very long because of the move speed. maybe have a slowing down button for the obstacles where you have to move carefully could help, or having a sprint button.
also I wasn't sure why the health packs sometimes killed you
I ended up getting stuck here. I tried running into it a bunch of times since it was a bigger healthpack. I backtracked a bit in case I missed something but I couldn't figure it out. Maybe I'm just not big brain enough 😄
Anyway that's what I got, gl with your game man!