Duke Nukem Advance - Platform: Gameboy Advance

Cheat mode:
-----------
Pause the game, then hold L and press Left, Up, A, Up, Left, A, Start, 
Select. A cheat menu will options for God mode, full weapons, infinite 
ammunition, and no clipping will appear. 

Throw more than one pipe bomb:
------------------------------
Select the pipe bomb, throw one, then press and release Select. You can 
now throw another pipe bomb. 

Shrink ray gun warning:
-----------------------
Do not walk next to a enemy and shrink him. You will shrink along with 
him. 

Freeze gun warning:
-------------------
Do not walk next to a wall and fire the freeze gun. You will freeze 
instead of the wall. 

Defeating Octobrains:
---------------------
When you see an Octobrain far away, use the freeze gun. When the 
Octobrain is frozen, it will fall and smash into pieces. This method is 
very useful if you want to save your rockets or bullets.