Banshee sniper kills help in private match

Here is the deal. An you know banshee gives 5 weapons each wednesday to test and get gunsmith reputation for them. I need a gentleman that can help me in the sniper one which requires you to kill 10 enemies in the crucible. I've found out that it can be done in private matches. So help me i will help you :) Ps: if you hit rank 2 in gunsmith you get a legendary weapon quest. Rank 3 for an exotic one