To get this Achievement you need to play (and complete) eightdifferent Game modes, and use all 15 Ability's – you unlock two new Ability every six Levels - till Level 48. Also you need to use all five weapons.
The here is copy perk, that allows you to copy builds from other players, so you dont need to be Level 48 to get his Achievement, but there is also a "be Level 55 Achievement" so you have every Ability and ranged Weapons anyway.
You level up fast in Wolf pack (easier with friends), also its the most chilling way. You need to play ~ 50 good Rounds in Wolfpack, or as i did ~ 120 Rounds in VS Multiplayer, took me 19 Hours to complete Level 55. Also check the Challenges, they get you some nice XP Boots
Gamemodes:
- Wanted
- Manhunt
- Deathmatch
- Artifact Assault
- Assassinate
- Domination
- Wolfpack: Discovery
- Wolfpack: Unleashed
Ability's
- Disguise (Level 0)
- Money Bomb (Level 0)
- Time Phase (level 6)
- Decoy (Level 6)
- Morph (Level 12)
- Firecracker (Level 12)
- Tripwire Bomb (Level 18)
- Bodyguard (Level 18)
- Booby Trap (Level 26)
- Glimmer (Level 26)
- Wipe (Level 34)
- Animus Shield (Level 34)
- Teleport (Level 42)
- Poison (Level 42)
- Smoke Bomb (48)
Weapons
- Disruption (Level 0)
- Knives (level 12)
- Sabotage (Level 28)
- Pistol (Level 38)
- Poison Dart (Level 48)