Here is a checklist for getting this trophy:
===Game Modes===
Manhunt
Artifact Assault
Domination
Wanted
Deathmatch
Assassinate
Discovery Mode
Unleashed
===Abilities===
Disguise (Level 1)
Money Bomb (Level 1)
Time Phase (Level 6)
Decoy (Level 6)
Morph (Level )12
Fire Crackers (Level 12)
Tripwire Bomb (Level 18)
Body Guard (Level 18)
Booby Trap (Level 26)
Glimmer (Level 26)
Wipe (Level 34)
Animus Shield (Level 34)
Teleport (Level 42)
Poison (Level 42)
Smoke Bomb (Level 48)
===Ranged Weapons===
Disruption (Level 4)
Throwing Knives (Level 12)
Sabotage (Level 28)
Pistol (Level 38)
Poison Dart (Level 48)
It has been confirmed that you CAN use your abilities and ranged weapons in Wolfpack (which gets you the most xp), with the exception of Body Guard.
As seen in the comments it is also possible to use certain Abilities ahead of time by using Copycat which allows you to use the same class as the player who killed you.