It's a bold choice to make decisions that make the gameplay have more rough edges, like the manual reloading and having to use the mouse for movement as well as firing. I think it worked well! I like it when people take those sorts of risks for a jam; it gives the game more character, even if it means that not everyone will finish it.
Your art was generally fantastic, especially the UI, which fit the setting well. I never did quite figure out what the purple meter was supposed to mean, although it didn't stop me from reaching the (bad) ending.