Serious Sam: Next Encounter - All Monsters on Laughing Gas

This is a strange game. Laughing Gas is an extremely rare ammo type for the Gas Gun, only appearing in a few secret areas. It permantently paralyzes enemies and causes them to (literally) die of laughter. Cheats were used to access Laughing Gas in the early levels, obviously. Bosses are immune to the gas and 2 monsters unique to the secret submarine level are left out in this video because you cannot access the Gas Gun there.