The game is interesting and have super cool premise, I like the sound effects and it is very smooth.
I have a skill issue though, the enemies are very frequent making it very difficult for me to progress. I see there are upgrades at 100 biscuits to change weapon which is quite a lot. I feel like I die very fast and cannot progress :(
The one time I made it I risked it but next stage is even harder. Don't know if the maps are handcrafted but the angles are always 90 degrees and zombies mostly come from the front? but when I rush they also come from the back. So I just stood there shooting the same 6 spawns until I went ahead and got eaten up. Let me know if I am doing anything wrong