Stage Access Cheats
Access the stage "Attack" by entering "LNLGRMM". "Spy Blue" becomes accessible with the code "TRGHTR". "TDBWL" unlocks the "Bathroom" stage. For the "Riff Mission" stage, use "MSTRMN". To check out the "Forest" stage, enter "TLLTRS". Use "SCRDCT" to access the "Hoover Mission" stage. Input "STPDMN" for the "Thick Mission" stage. For the "Snow Mission," use "BLZZRD". The "Shrap Mission" stage is unlocked with "SRFPNK". Head to "Fort Plastro" with "GNRLMN". Use "HTTTRT" to unlock the "Scorch Mission" stage. For "Showdown," use the password "ZBTSRL". Access the "Sandbox" stage with "HTKTTN". Enter "PTSPNS" to get to the "Kitchen" stage. Use "HXMSTR" for the "Living Room" stage. Enter "VRCLN" to access the final stage, "The Way Home." Note that you can restart any stage at any time by holding down the "L" trigger, "R" trigger and "Down-C" buttons at the same time.
Power-Enhancing Cheats
Use the code "NSRLS" to gain all the game's weapons, and then use "MMLVSRM" for maximum ammunition for those weapons. "MLMHTKP" enables invincibility so you can breeze through any level without worry.
Character Cheats
Use these cheats to play a character besides Sarge: "PLSTRLVSVG" unlocks the villainous General Plastro. To unlock Vikki, enter "GRNGRLRX". Type "TNSLDRS" to turn any previously unlocked character into a tin soldier. For example, enter "GRNGRLRX" followed by "TNSLDRS" to create a tin-soldier version of Vikki. You can unlock all the characters in multiplayer mode by entering the cheat "VRCLN".
Just for Fun
If toy soldiers aren't small enough for you, you can shrink down the action even further with mini mode. Enter "DRVLLVSMM" to enable mini mode. "THDTST" opens the developer's debug mode.