Wolf Of The Battlefield - Commando 3 - Platform: Xbox 360

Full health:
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Pause the game, then rotate the D-pad in a full circle at least three times. 
Select the "Achievements" option at the menu. Press B to exit that screen. 
Select the "Resume Game" option. You will still remain at the same screen. 
Select "Resume Game" again. The game will begin with your character at full 
health.

Mission select:
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Successfully complete the game to unlock all missions. Note: Using this option 
will prevent the "Humanitarian", "Madman", "Mercenary", "Sleuth", "Veteran", and 
"Combined Assault" achievements from becoming unlocked.

Achievements:
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Accomplish the indicated achievement to get the corresponding number of 
Gamerscore points:

Armored Attack (6 points): Get in the tank with two other players. 
One Man Army (7 points): Kill 200 enemies. 
Veteran (7 points): Complete the game on Black Ops difficulty. 
Mercenary (15 points): Complete the game on Suicide Mission difficulty. 
Humanitarian (10 points): Rescue all of the POWs in the game. 
Sleuth (20 points): Find all of the Secret Areas in the game. 
Brasso (10 points): Achieve the 12X score multiplier. 
Hero (10 points): Achieve the 24X score multiplier. 
Freedom (25 points): Free 25 POWs. 
Madman (30 points): Attain a 24X score multiplier on every level. 
Combined Assault (40 points): Complete the game with at least one other 
player. 
Reckless Driver (20 points): Kill 40 enemies while in a vehicle.