This is very nice! It makes me long for that wonderful flash game era, a long-gone era of innovative indie games. This is an insanely fun game with each perfectly crafted gimmick for each level, and I am having so much fun playing this. I especially like level 14, which I think is what such a game should look like. Brillant!
For a minor issue, I'd say the platforming controls are a little bit off, and it's easy to get an intending wall jump when constantly pushing yourself against the wall. This entirely breaks all levels before the large flag where you can just wall jump to a save corner. I ended up replaying the game once I noticed it should be a bug. Another criticism is that some of the levels rely on popular culture references that might or might not resonate with the player. Not every player played Far Cry and not every player watched Squid Game. The level is still playable, just the joke/hint might get lost because of that.
Anway with all that's said, this is still a wonderful game and I really liked this a lot. Well done!