I played the Mighty Sloth for a while because I wanted to experience it myself after watching it in the stream. For me it's a bit difficult because I usually don't play SciFi themed games. But you did a nice job on the atmosphere, and the whole sloth and polymorph theme is funny. I like retro styled games, as long as I don't have problems with interacting with them. The game worked well for me so far, although I had to get used to the controls/movement, because I also usually don't play such kind of first person game. But it was definitely an interesting experience, thanks for creating this!
There is one problem I want to mention that I would recommend to fix: While I played the game, I intuitively/almost automatically wanted to open the game/pause menu to save the game. Yeah, to be honest I haven't checked the game description where you list the controls, and in older games you maybe didn't use ESC for this - but I did. And that was rather frustrating, because of course by accidentally hard quitting I lost all my progress. If you can, I would really recommend to not just hard quit the game with ESC, but open a menu instead where the player can choose if they want to save/load or quit the game or continue playing. It could make your game more accessible for some players.
Anyway, congrats for finishing this. I also enjoy to watch the development of your games in the discord!