 WWII Tank Commander PC cheats
Hack: Unlock All Levels:
Note: This drastically alters a system file. Back it up before you muck around the file, or you'll be sorry. E-mailing IGN because you mistakenly alter your FAT is laughable.
Go to the Tankcommander/.../data/profile/save/ game directory and locate the checkpoints.txt file using a text editor. In that file there is a line value:
Level 1-Complete 08/24/05 none
Copy that line and paste it in the same file. Then change the level number and save the file (as text). | 
