Dude wtf this game is AWESOME.
The music is great, perfectly fits the gameplay. The enemies are just the right speed to be scary and evadable, the bullet mechanic where each bullet is different and counting down is super smart.
Absolutely loved everything, felt like I was back on Kino der Toten fighting zombies for a while.
Don't understand why there aren't more comments.
IF YOU SEE THIS PLAY THIS GAME.
SIDENOTE : Looks like I made the count freeze so I couldn't defeat him but appart from that I could have kept playing for 10 more waves without seeing the time pass, really great. 
Viewing post in Count's Down jam comments
Thank you !, this genuinly made my day ! The kino der toten comparision was especially where I was going for !
And for the bug, sadly I literally forgot to check 1 checkbox while developing the Silver Bullet, which led to this bug ;-;. But all fixed and after the Jam I'll update the game if you want to try it again bug free 😅