Death_Korps_Kommissar said:
But I seem to end up getting shot in the back quite a lot
A few things you can hear clearly:
1. Footsteps downstairs in a two story building
2. If you kill someone next to his teammate, the teammate will start babbling nonsense and gives away the position. (Doesn't that suck for the teammate? Forced to mourn about their dieing friend.)
3. Orgasm noise when someone misses a knife behind you.
4. Sniper shots that are near you.
5. Water splashing is pretty obvious.
6. Hear the difference between your motion sensors and theirs.
7. Have the ability to know that a motion sensor is around you, and get out of the area before you're dead.
8. Other crap they scream out when an enemy is around you.