Here is the full list of all 45 Rogue Warrior achievements.
Complete the game on Elites difficulty.
Complete the game on Regulars difficulty.
Kill a group of 4 enemies with a grenade. (Single Player)
Kill 50 unalerted enemies. (Single Player)
Complete an entire mission using only the pistol. (Single Player)
Perform 5 Finishing moves. (Single Player)
Blow up 20 fire extinguishers. (Single Player)
Complete the game on Recruits difficulty.
Complete mission 8 on any difficulty.
Kill 20 enemies using explosive objects. (Single Player)
Complete mission 7 on any difficulty.
Kill 50 Spetznaz. (Single Player)
Complete mission 6 on any difficulty.
Destroy 10 vehicles. (Single Player)
Kill 20 enemies using grenades. (Single Player)
Kill at least one enemy with every weapon in the game. (Single Player)
Kill 20 enemies using blindfire. (Single Player)
Complete mission 5 on any difficulty.
Kill 30 enemies using sniper rifles. (Single Player)
Kill 50 enemies with head shots. (Single Player)
Complete mission 4 on any difficulty.
Kill 30 enemies using kill moves. (Single Player)
Complete mission 3 on any difficulty.
Kill 5 enemies with a shotgun without reloading or changing weapons. (Single Player)
Throw an enemy over a ledge. (Single Player)
Complete mission 2 on any difficulty.
Kill 5 enemies with an assault rifle without reloading or changing weapons. (Single Player)
Complete mission 1 on any difficulty.
Complete a mission without dying. (Single Player)
Perform 3 Kill moves in a row. (Single Player)
Smash an enemy's face into a wall. (Single Player)
Play 50 games online. (Multiplayer)
Kill 200 enemies. (Multiplayer)
Be on the winning team for 10 Team Deathmatch games. (Multiplayer)
Place first in 10 Ranked Deathmatch games. (Multiplayer)
Finish each map in 1st place. (Multiplayer)
Place first in a Ranked Deathmatch game. (Multiplayer)
An enemy dies from your grenade ... after you have been killed. (Multiplayer)
Place first in a Ranked Team Deathmatch. (Multiplayer)
Kill 3 people in a row. (Multiplayer)
Kill someone on your friends list. (Multiplayer)
Perform a kill move on a friend. (Multiplayer)
Play a Team Deathmatch to completion with at least 3 friends on your team. (Multiplayer)
Play online once. (Multiplayer)
Host a custom game to completion. (Multiplayer)