Extra money
Note: This cheat involves changing a game file. Make sure to create a backup copy of the file before going on. Now use a text editor to edit the "scorch.cfg" file in the game directory. Change the number after the "Initial_Cash=" line to "999999999".

Super charged super mag
Note: This trick will take two human players, with one person having a super mag equipped and fully charged. Have the second person get as close to that person as they can, sort of like this:

                    X
                             X (second person)

Now have the second player set their weapon to laser, aim at the first player, set power to 1000, and fire. If done right, the first player's super mag will turn purple and should be able to survive against two nukes.

Go through canyon
When you have the oil object that you can move your tank, swiftly press Left and Right near the wall to pass through the canyon.

Unlimited money
Saving your money will raise it. Wait without purchasing anything about 20 to 100 rounds and you will have plenty of money to buy 99 of every product in the shop. But if you wait too long, even buying 99 of every product will not take all your money. It will keeps growing and will glitch the graphics after it checks your money.