After hearing about the marathon/lightweight/commando class, I've been testing it out, and it is pure hacks! I literally warp across rooms at people, and if they catch on and start trying to knife you back you only have to sidestep them and stab in the back. Having lots of fun with it, feel a bit bad though. Currently working on getting the tactical knife attachment for the magnum, was using dual rangers but that's boring, too easy, knifing is much more fun.
The above set-up works a treat on CTF as well, me and a mate both used said set-up and just ran round trips to the enemy flag and back, think we died a total of 5 times between us all match and scored 8 flags and picked up some nice knife kills.
Agree about spawn points too, I went round the back of the bottom base earlier on terminal because they were defending there flag from there, I kill them all with knife/magnum, then they spawn in the same place, que me stabbing them before they knew what happened, then lay a claymore and sit back and watch that take a couple out, then stab more 13k/s thankyou!
Does make me feel dirty though