Congratulations on your first group project together - achievement unlocked! :D
Wow, did you really write this in assembly!? Damn, that's low level. Is there a plan to continue to use it?
The story is interesting and the design of the levels has double meaning - higher elevation and higher intensity of the emotions. That's good design!
A couple of objects in the house trigger sensitive moments from the past where the protagonist may have been motivated a certain way but hid the truth from self and the sibling. The player is presented with a choice - continue the fake narrative or face the truth. Mechanically this is simply a choice. This is a widely practiced narrative device but I believe it underutilises the unique nature of video games.
I do have one suggestion for an improvement which is really a challenge. Here is the challenge - can you present internal struggles in a way which tests the skill(s) of the player in a meaningful way?
I'm working on "solving" this problem in one way - presenting the emotional regulation. You can check out my submission to see what I mean. I hope you take up the challenge and maybe find more solutions.
Good luck!