Continue playing to unlock this secret achievement.
Complete the Game on Insane.
Complete any chapter after Arrowtree in Co-op on any difficulty
Complete the game in Co-op on any difficulty.
Get 20 Headshots.
Kill 20 enemies without alerting them.
Kill 20 enemies with a vehicle.
Kill 20 enemies with explosive damage.
Kill 5 enemies at once with explosive damage.
Successfully wall-jump 100 times.
Chain together any 3 physical abilities in 5 seconds or less.
You or a Co-op partner collects 1 Emblem.
You or a Co-op partner collects 10 Emblems.
You or a Co-op partner collects 20 Emblems.
Shoot 25 Trip Mines out of the air.
Get 10 Kills in a Ranked Multiplayer Match.
Host 25 Ranked Multiplayer Matches.
Kill 3 players at once with Trip Mines in a Ranked Multiplayer Match.
Get 10 headshot kills in one Ranked Multiplayer Match.
Win 25 Ranked Multiplayer Matches.
Win 1 Ranked Multiplayer Match of each Type.
Win 1 Ranked Multiplayer Match on every Map.
Win 10 straight Ranked Multiplayer Matches.
Kill 10 enemies using only the Autorevolver in a ranked Multiplayer Match.
Capture 3 flags in a Ranked Multiplayer Match.
Complete the Game on Casual.
Capture a flag in 10 straight Ranked Multiplayer Matches.
Win 5 straight Ranked King of the Hill Matches.
Make a Flag Capture in a Ranked Multiplayer Match without firing a shot or using grenades.
Complete the Game on Hardcore.
