In H1 through 3 the plasma sword meant something, now any Brute or Elite can 1 punch death you reguardless of shields, which makes the sword a prop in the hands of thick AI
Can no one beat the AI in FEAR & Bioshock 1..? you combine them you get the best AI ever
try different game types, see where you get the most points per 15 minutes.. I just play firefight, just find it less laggy (4 players is better then 12 when playing with people from abroad)once I get my Lt Col I'll be happy until the new achievements turn up (hopefully no more ranked or ranking stuff)