This is like the medals.
Lucky 7's Trophy: You can choose to rank up 1 rank or be a leader for a class you're in,or switch to a different class.(Must reach Lt. Sgt. Rank 7 to award)
PWN Lethal award: Must be High Classed<+7 ranks> (class of insanity)
First Steps award: Raise your kd by .15...(Eligible for one award must have 2000 kills +)
Impersonator Award: 'Join' a clan. (Spies only) +3 levels.