[b]#1 Get a shredder and go to judgement on quick match. (Get the resupply ability so you don't run out of ammo.) Set it to you with 11 bots on very easy. Stand on the top of the highest building and shoot like crazy. (It helps to get rapid fire first so you can shoot faster.) You will get more credits because of the kill bonus "surprise". Also, you might get some"assassins".
#2 Go to quick match and change the setting to capture the flag. It doesn't matter which map. Then, put two other bots on your team and three against you on very easy. Put it on 25 captures. Once the game starts get about 20 captures. Then grab the flag and keep it. You will get the kill bonus called "show off". Run around killing anyone who gets your flag and anyone who tries to kill you. You basically control the game now and can end it whenever you want to.
get a sniper the (orange one)and its one shot one kill! you can also get a credit canon and teleport by buying a pack for 6000 cr or play juggernaut 1v1 on a small map! but this might help? byee
