Serious Sam 3: BFE

Serious Sam 3: BFE cheat codes: 
While playing the game, press [~] to display the console window,
and type "cht_bEnableCheats = 3" to enable cheat mode.
Then, type one of the following case-sensitive codes at the console
window and press [Enter] to activate the corresponding cheat function.

Note: Codes can also be entered at the menu that appears
after you press [Esc] followed by [F3]. Enabling cheat codes
will prevent achievements from being earned and block your score
from being posted to the leaderboards.
cht                          - Press [Tab] to display cheats
cht_bGod                     - God mode
cht_bGiveAll                 - All available weapons and maximum ammo
cht_bInfiniteAmmo            - Infinite ammo
cht_slGiveHealth             - Extra health
ch_slGiveArmor               - Extra armor
chtGiveAmmo([weapon name])   - Extra ammo for indicated weapon
cht_bKillAll                 - Kill all enemies in line of sight, except Bosses
cht_bKillBoss                - Kill current Boss
cht_bInvisible               - Invisible to enemies
cht_bFly                     - Flight mode
cht_bGhost                   - Flight mode and pass through walls
chtGiveWeapon([weapon name]) - Spawn indicated weapon
cht_bAutoAim                 - Auto aim
cht_bTurbo                   - Increased speed
cht_bUnlockMentalMode        - Mental difficulty
cht_bShowAllNetricsaMessages - Display all the messages in NETRICSA
cht_bEnableCheats = 0        - Disable cheat mode