Really liked how you made the environment darker and gave the player a flashlight - it made it feel a lot more claustrophobic and not as easy to plan ahead for the zombies. Zombie noises and other sound effects definitely helped with the immersion.
Couple things I'd like to see:
- Where'd the boss zombie go?? I really liked him haha I thought it gave a bit of extra challenge.
- I walked by the vial several times because I simply didn't notice it. I think it'd be worth making the vial a noticeable color or outlined or something to make it clear to the player that they can pick it up.
- Some sweet background jams to slay some zombies to XD