Here is a cheat guide on how to enable console and some useful console commands for you to use in-game.
Turbo Overkill Console Commands
slomo [value]
Changes the speed of the game, default is 1
zhenme [value]
Sets how much money you have
sas (also noclip works)
NoClip mode (its stupid, I just did it since its fast to type)
giveall
Gives all weapons and ammo
neverrunout
Never run out of ammo
notrigger
Enemies don’t react to you
tornado
God mode
hidehud/showhud
Does what you’d expect
givekeys
Gives all weapons and keys
How to Enable Console
The console is accessed via pressing “~”
Thanks to Takin a huge shit rn for his great guide, all credit to his effort. you can also read the original guide from Steam Community. enjoy the game.