My proposed modifications for my final submission is to entirely change the entire of Main Menu  to accurately represent and match the theme of the game: background, UI, buttons, etc. I want to spend a generous amount of time on creating a fun intro of a main menu, and also swap out the UI level selection and the pause screens on each level.
I want the center of my focus to be on  level complexity, instead of 3D environment (as that was my main focus last time). I want to create an original pickup, complete with its own script function, sound effect, and sprite. Or perhaps create/script something that explodes to damage the player/or enemies.
Level 1 will be completely retiled, and reworked to add challenges.
I will also create a brand new level 2 + 3, instead of replicating level 1, with its own obstacles and goals. I will expand the size of the game itself to have more room to work with.
I think I will also create minor adjustments to game music and sound effects, and  foreground tile detailing as time allocates.