I know people have said this before, but I really hate Lucky Crits.
I swear I was playing a game on Foundry and 3 times in a row I died because this Demo/Heavy got a lucky Crit on me.
I also hate the servers where once the map time limit ends one team is randomly picked as the winner.
On that same game, we just had to capture their final point to win the game and just as we were about to start capping it.
"YOU FAILED! BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO"