(I am now in a rush to test as many games as possible to help, so please do not mind the cursory reviewing style.)
[testing the original game jam version]
"The player's only ability is to lock themselves in place!" -> reminds me of one of the powers from the Game Boy game "Monster Max"
Silly remark: I don’t know why, but the character’s silhouette and haircut reminds me of Beavis, or Butt-Head, or a mix of both. X)
Wow. This is totally in the vein of "Portal" (I had seen a 2D version, and your game reminds me of this), with your own twist. Actually, this is more of "Portal" meets "Super Meat Boy"! XD
Controls are QWERTY-only instead of layout-independent (I have an AZERTY keyboard), BUT arrow keys are enabled; yet, this is troublesome for the Z key (as in "That time i got locked in a MINIGAME Collection"!).
Beat the game!
Hahaha, the ‘QUIT button dialogue’ is great! XD Your take on GLaDOS / Wheatley? Still, this is a desktop version and not a navigator one, so the AI is wrong. ;)
Oh, I see in Archikatz’s comment and yours that the mechanic is taken from "Breath of the Wild" (never played, only knew parts of the game, but maybe not this ability)… I thought you invented it, so I am mildly disappointed. I mean, the game is still great and totally different from this "Zelda", but I thought you really came up with it from scratch!
Anyway, everything was great, from funny details (the rotating jump, the way the character dies turning into some kind of bunch of ‘papers’…) to the whole in-game progressive tutorial (once again, reminiscent of "Portal").
This could very well become a ‘full’ game. :)
(By the way, just putting here that my game is pending until I get the submission form.)