Found a cheater
Dude claimed he was "Just an experienced player" with lots of game sense and aim training. Level 50 isn't helping his case, plus I think he's been reported here before. I forgot to clip it but he snapped 180 degrees the millisecond I came out of a tunnel right onto my head with a predator cannon. It was just very, very suspicious. People were claiming that BennyOnTwitch was also cheating, but he might've just been good.
Edit: My response can be found below, please stop replying before you read it.