Just looking for some tips on the following challenges for the Precision Master card: Wet-Work? Get 10 kills (a merciless medal) using a class equipped with no items? Also.. I just got 10 headshots with the Kap-40, I only used the Kap-40 in Nuketown Dom - the after action report clearly showed 10 headshot medals - yet the Pistoleer challenge is not complete; does anyone know why? Really frustrating challenge - in 3 games, I got 8 headshots, then 9, and lastly 10 - but since the challenge is still incomplete (baffling TBH) I gave up - surely the KAP 40 is considered a pistol right? Could it be that the last headshot which incidentally was the final kill (kill-cam) didn't register because there wasn't enough time for the game to acknowledge the process of awarding me the pistoleer challenge due to the clock running out of time before the medal could actually come up during gameplay?