When stuck in a game with a broken shotgun; whether it's stutter lag, slow unresponsive shutgun feel or its clearly not registering those shotgun hits. Switch to a support role and give your team semi close cover. You may have the weakest K.D. Ratio, but you can still come in second or third place with points. If you can't get the kills, make sure your team does.
Match: King of the Hill
Bounty: KOTH Score ll
Card Cost: 40 scraps
Reward: 4,000 xp
(This is probably the easiest way regardless of skill level)