Press ~ during game play to display the console window, then type sam_iEnableCheats=1 as a case-sensitive code to enable cheat mode. Press ~ again, then press [Esc], followed by F1 while in the pause menu. You can now select the following cheat options. Note: You can also type sam_iEnableCheats=2 as a case-sensitive code at the console window to enable developer mode, or sam_iEnableCheats=0 as a case-sensitive code to disable cheat mode.
Add Life Ghost Refresh Heath Kill All Turbo God Mode Invisibility Toggle Hud Unlock Levels Chapte
When starting mission, run. Keep running until you reach a fenced in area with helicopters. Get close to one and enter it. Fly up in the helicopter. Make sure not to get in his way when he is airborne. To do this correctly, fly at a angle away while at the same time shooting him. The helicopter does not have enough ammo, so you must land on a pad with the green glowing ammo. After getting that, it should be enough to destroy him. Alternately, if you do not want fly you can do it the hard way by firing all your ammunition on him. Make sure to stay directly underneath him, or behind a fence so he cannot hit you.
During the level when you must defeat Zum-Zum, you must destroy all of the large sunflowers so that Zum-Zum cannot regain its life. After you destroy the sunflowers, you can attack Zum-Zum and kill it before it recharges.
Note: This procedure requires editing a game file; creating a backup copy of the file before proceeding is recommended. With a text editor, edit the "sam2.ini" file in the "/serious sam 2/content/serioussam2/" directory. Change the "sam_iEnableCheats = 1/0" line to "sam_iEnableCheats = 2". Then, press one of the following keys during game play to activate the corresponding cheat:
CHEAT FUNCTION - KEY No clipping - Y God mode - G Auto aim - U Turbo running - J Invisibility - I Flight mode - L Kill all on screen enemies - K Extra life - [Insert] Change chapters - [Page Up] and [Page Down] Change Real time factor - [Left Square Bracket] and [Right Square Bracket]