It's really impressive to see how much you have got done in the short time period!
The artwork is really nice and has a good glowy feel to it.
I feel like the grapple attack should aim towards be mouse cursor as it felt a bit unintuitive and clunky to have it fire directly horizontal to the player.
I liked the look and feel of the boss in particular, the glowing red on the black demon body looked sick.
Nice job!