Plutonium

That makes sense but I've asked him multiple times and he's never given either of these explanations

Sorex Yeah I saw that but how does that explain the level 55 thing, he also claims to not have the guns and attachments unlocked

I've been playing custom matches with my friend and I think he might be cheating, first off the day he downloaded plutonium his rank magically jumped to level 55, and has since jumped to prestige master within the span of a week. He claims to have only played a few games on the server browser. Second his situational awareness and ability to predict my position is vastly different from how he plays in person on console. He always seems to push forward the moment I stop holding an angle behind a wall and generally seems to hit me with every concussion he throws. He has also hit a number of suspect shots through walls. Is there any other explanation for this than cheating. I'm willing to accept I'm just bad at the game but I can't understand the rank stuff.