hey mate. you are not alone. was just finished a game where 2 people teamed up. they were in a shack. 1 was lvl 2 helmet and one had a 3. I had a Kar98 suppressed bla bla bla. I had to put 4 Kar98 shots in the guys head, mind you I had to shoot trough the small windows. anywho, 4 kar shots in the head with lvl 2 helmet to bring him down. the other guy with lvl 3 helmet took my 2 shots like a champ and also body shot him in a lvl 3 vest and still didn't get him down. i got killed by the zone while running with it, server decided that I must not live and put me down. oh well, top 3 is top 3.