Nice twist on known top-down shooter mechanic. Cool audio and visuals.
As mentioned by other reviewers, main menu looks a bit out of place (and I understand that; better to improve gameplay in the short amount of time you have) and transition animations are a bit too long. Click to shoot while not aiming with the mouse was a little confusing but I figured it out eventually. The difficulty curve is too steep though: it was hard to withstand a couple of transformations. Maybe increasing scarab spawn rate with time would help it. Also I noticed that scarabs managed to spawn right besides me, perhaps tweaking the spawn logic to make sure that there's enough distance between player and scarab would be nice.
Looks like I've written a lot of critique, but the game was actually fun and I liked it. Excellent!