I still feel like i'm learning...
the hardest part for me is to decide which perks to use.
I struggle between these:
1. Scavenger Pro and Bling- I'd like to go with a silencer and heartbeat monitor for "silent" mode...of course i love the acog sight too. sigh.
2. Coldblooded and Stopping power pro-i hate getting killed by the air support as soon as i respawn, but stopping power seems to be the only way to get a kill when you and the enemy see eachother at the same time.
Thats why you have 5 different classes. Each one of my classes is set up for different scenarios.
Class 1: My best weapon setup. If all else fails, I fall back on this weapon setup. Currently consists of an M16 RDS+FMJ, Stopping Power and Ninja Pro
Class 2: Weapon I'm working on leveling up
Class 3: Sniper Class
Class 4: Full stealth. Weapon with silencer, Coldblooded, Ninja Pro. You get the idea.
Class 5: I change around this class based on the map. If there's a specific perk or weapon that's suitable for a particular map, I change this class out during intermission.
That setup's worked great for me so far.