Camping isn't just sitting in a random corner waiting for free kills. If you're doing it properly, you're turning one room into a fortress.

Claymore watching one entrance.
Trophy System keeping explosives out.
Guardian slowing anyone who gets too confident.
Sentry Gun covering the angle you can't.

Everything has a job.

The funny part is people will die, sprint straight back to the same room, die again, then call you bad. At some point you've got to ask who's making the worse decision.

Anyone can run around with an MSMC for ten minutes. It takes patience to hold down an area, predict where people are coming from, and make them play your game instead of theirs.

People call it camping.

I call it map control.

— Camp