Nice FPS for a gamejam !
The art direction is a little off (100% because of the blend of external assets), but this is redeemed by the game's level of content.
The inclusion of bosses is a good idea, and helps to break up the game's routine.
Can you pick up back your laser pistol in level 3? I prefer it to the pump-action shotgun, which looks weaker. I was surrounded here and would have loved to have the grenade launcher to eliminate the packs of mobs.
Cheers !