Other mistake: Scream Fortress 2014 - Carnival of Carnage: When Marasmus casts the Giant Heads spell, if a player, especially one playing a Heavy, is wearing the Monoculous hat. Which is a large eyeball and lid that replaces the character's head. When this spell is cast, you can see the eyeball mask enlarge, but just the lid part, the purple and white of the eye vanishes completely. This allows you to see the character's head inside it and makes it look more like a space helmet. And then the insides of the eye lid are transparent from the insides, like a one way mirror.
Other mistake: Soldier: Even though a Medic can freely ubercharge a soldier wielding these weapons, the strange part Kills While Ubercharged can not be applied to the Equalizer or the Escape Plan.
Other mistake: Sniper: The strange part Critical Kills can not be put on the Sydney Sleeper rifle, even though it does do min-crit damage.
Other mistake: Demoman: The strange part for Critical Kills can not be applied to the Ullapool Caber, even though it can be crit boosted.