EDIT: As bugs were fixed with the game, I can edit now.

First, congratulations on finishing the game! That alone is an accomplishment to be proud of.

If viewed as a prototype for a game, I think this has some interesting ideas. I like the idea of a deduction game where you have to wander around a facility to figure out what one needs to do in order to rob it, and listen for clues. Here, finding the clues seems straightforward, by just wandering around and seeing when the pop-up to interact opens, though you DO need to actually read what's said in order to solve the puzzle.

I think I would like this game more if it were not so obvious when you found a clue. I think bringing this game into 3D and having your character wandering around, with audio cues that provide clues on robbing the facility, and there be more "red herrings" when you inspect stuff. I think there may have been some this iteration too that I did not notice (I have not successfully finished the game yet).

You could even keep the hand-drawn art. I like it; it gives the game some character. If you kept the hand-drawn sprites in a 3D space, that could be very appealing.

As it stands right now, the game is okay, fine enough for a game jam game. It's an interesting enough deduction game where you explore, get clues, and use those clues in the end to rob the bank. I think the idea could go further if you wanted to explore it more.