If you're here because you suspect me of cheating, get the ♥♥♥♥ out and learn to detect hacks better. Why would I start cheating after this many hours of playtime? I don't need hacks to own you, so shut the ♥♥♥♥ up and learn to use your eyes and ears.
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Speed-course in detecting hacks:
First of all, did I have UAV, or did I maybe just use a killstreak which made me able to see your location? Most folks got longer memory than a ♥♥♥♥♥♥♥♥ goldfish. Then over to the important part, SOUNDS! Remember that ninja pro doesn't make your footsteps silent, it only reduces the sound to 1/4 of the volume, focus a little bit and you can easily hear it. You also make sounds when you climb over an obstacle, jump, reload and activate killstreaks. And let's never forget grass and snow, it's really easy to hear you moving in it.

Now enough about sounds, with alot of experience it's easy to anticipate where people go, what they're going to do and how to counter it. Memory has already been mentioned regarding killstreaks, but seriously, it's not hard to remember where you were camping when you killed me one killcam ago. And let's not forget coincidences, don't mindlessly accuse someone the first round of an SnD-match because the killcam seemed weird. Pay very close attention to killcams, alot can happen in those brief 3 seconds.

Oh and if it's aimbot, not wallhack, you're accusing me of, you clearly have no ♥♥♥♥♥♥♥ clue what the definition of accuracy is.