Killing Floor 2: Gunslinger Hell on Earth Solo
Gunslinger is imo the strongest perk in KF2, but I still prefer sharpshooter since it's more fun.
0:00 - Lobby
0:10 - Wave 1
2:16 - Wave 2
4:23 - Wave 3
7:27 - Wave 4
9:55 - Wave 5
13:01 - Wave 6
16:38 - Wave 7
21:07 - Boss Wave