Looking at other comments, the criticism I'd give is nothing you don't already know so I'll spare you. Was only able to play two rounds due to the lack of mouse inversion but otherwise the game is fun and has a lot of potential. If at all possible, might be a longshot, but co-op multiplayer would be phenomenal. Looking forward to the next update with mouse inversion/key binding options hopefully.
Viewing post in Polygon: DROPPED INTO HELL comments
Is certainly a work in progress, am working on the inverted mouse option and controller support as we speak. Few other things planned for next update:
1. More Weapons- pistol, shotgun, rifles, rocket launcher, grenade launcher
2. Better ammo/reload system
3. Custom map of Spoonerville not the demomap of Synty Polygon Apocalypse
4. More maps
5. Collectibles
6. POI Points of Interest