Create a short cut to hta.exe or just edit the one already on your desktop
open the shortcut properties and add -console after the "Target:" line
Ex:

This is how I installed mine, your game path will be different on how you
choose to install your game

Before:
"C:\Program Files\Hard Truck Apocalypse\hta.exe"

After

"C:\Program Files\Hard Truck Apocalypse\hta.exe" -console

when you start the game & play or load a game, using the shortcut you can
then type in various codes in the console by pressing "~", but you should
always pause game first by pressing "F8", because no likes to die while
trying to type in a code...hehe. For all those who don't know where the "~"
key is at, it's the key above the "Tab" key.

open console with the key "~" after hitting "F8" to pause

giveall() – 10’000 coins, Max HP and Max fuel.
*Note: This does not repair your car, it just makes your car have more HP
& fuel, you will need to go to a gas station or town to repair the car.*

givemoney (N) – Give N amount of money.

truck (N) – Gives you the truck named.
*Note: I have not found out what names to put in the "truck (n)",
"teleport (n)", "map (N)", and "giveguns (n)" yet make it work.*

teleport (N) – Teleports you to the place named.
*Note: This can seriously mess your game up if done.*

god (1) – Invincible On.
*Note: You can still dead if you fall into any kind of river, lake, ocean.*

god (0) – Invincible Off.

giveguns (N) – Gives You the named weapon.

map (N) – Shows Whole Map (?).


Credits:

This was found from this site
"http://forum.nival.com/eng/showthread.php?t=28966"
posted by "lab8" who found it here at this russian site
"http://www.igromir.net/cheats/398/537"