First of all, this is really impressive for a first game, especially since its for mobile too. The environments and characters look nice, and the music fits pretty well. My favorite aspects are the level design, and movement. It feels good to jump off walls and slide around, especially in saw rooms with the large swinging ones trying to time dodges and grab treasure. I noticed a slight inconsistency where some bookshelves were platforms and some weren't and It was a little hard to tell how long range the melee attacks were too, maybe a slight effect to visualize their hit area would help. With the bosses, its possible to stand back and jump + shoot to kill them and they wont chase you, I think after their cool intro plays maybe they should always chase the player no matter what. The overall presentation of everything was really nice, like the menus / ui / the boss intros / dialog. I was wondering what the meter on the menu screen represented, I increased it somewhat (beat each boss twice). Well done on this, has alot of potential for where you take its development.