Good idea for the jam and I was going to do this kinda thing at one point also.(Great minds and all that)
Sounds are fun and looks good.
I find the text flashing up just gets in the way and too much is going on at the same time on the screen. This is likely a me issue tho as my eyes are not great but i think the background could of been a bit less in ya face.
is the player teleporting to the mouse after you shoot intentional?
Great game tho and great job.