Cons:
In fullscreen (1440x 2560) the hurt splash screen didn't cover the whole screen. Looked like it was set up for a 1080p screen only.
Second half lagged a bit and caused issues with firing a weapon. Took a second to realise I pressed fire.
Second half also felt boring quickly as there was no change in the game play and repetitive.
Pros:
Killing pumpkins was fun and satisfying.
Melee and the guns kept it fun enough to not feel like a restriction to only use 1. Though the shotgun was fun to spray with.
I hope this helps you and your next game will always be one step better then your last.