No missable achievements (plus 38 unknown)
Sign in with Steam or Xbox to track your progress, and:
Take a successful shot from a distance of 1 km or greater
Kill 20 enemies from a distance of 600m or greater
Take 50 headshots in single player
Kill 25 enemies using thermal or night vision goggles
Kill 50 enemies while holding your breath
Complete Act 1
Complete any single player mission without using med kits, but taking damage
Participate in any multiplayer match
Complete Act 2
Kill 30 enemies using your sidearm
Complete the game on Casual
Kill 15 enemies with a stealth kill
Kill three or more enemies by shooting a grenade
Complete the game on Medium
Complete any act without using medkits
Kill 25 opponents in multiplayer
Complete the Campaign using max one medkit per mission
Achieve 100% accuracy in any single player mission
Kill 50 opponents in multiplayer
Kill 10 opponents in multiplayer using your sidearm
Complete the game on Expert
In one multiplayer round kill an opponent with a sniper rifle, sidearm and melee attack
Take 25 headshots in multiplayer
Win 10 Team Deathmatch rounds
Win 5 rounds in a row in Team Deathmatch
Kill 100 opponents in multiplayer
Take 50 headshots in multiplayer
Win 25 Team Deathmatch rounds
Collect all secrets in Act 1
Collect all secrets in Act 2
Collect all secrets in Act 3