Multiplayer game. Can't remember which it was, but I remember it was a shooter.
The objective of the map was to protect a console so the enemy team doesn't activate it and win. I decided to wait by the control panel hidden just beside the door so anyone passing by would get a rifle burst on their back.
It all started well, if by well you mean 75% of my team was dead in less than 5 minutes for charging blind at the other team. The rest were scattered screaming to regroup. I ignored them knowing the mission objective was to simply defend. Meanwhile 2 enemy players charged in the room and I killed both of them without even being seen. After a good while I killed another 4 enemy players trying to get in. I was lucky since they all came one by one.
Then, all the enemy players screamed in chat about just charging in since there was just 1 survivor of the defending team... me. So, they came in blazing guns, and the biggest humiliation for them ensued. I killed over 10 players point blank while they shot everything around them. They were lucky Friendly Fire was off since they shot everyone they saw, which was mostly them.
Map was won and while the chat was full of hate chat from their team, everyone from my team cheered at me for winning against the odds completely alone and outnumbered by a big margin. The other team couldn't say a thing since it was very obvious they were all stomped by just one. Ultimate humiliation in my book.
That day I felt invincible... at least for a while since I have never been able to replicate such a victory ever again. There have been close calls, but never as glorious as that.