You have to get rid of the enemies before they kill you. Collect the fuel bottles, coins and treasures your see. Earn money and get upgrades. Use arrow keys to drive and space bar to shoot.
Rescue the girl once you have broken those objects of colours, pressing the spacebar... Jump and move with the arrow keys, until you go to where she is and also break the building to save her.
Use your skills to make the monster fall in the trap. Get rid of some blocks and place the monsters in the most dangrous spots to get them. Use your mouse.
Using your sword (keyboard - letter A) you will have to kill 100 enemies. When you obtain your objective new powers will added to you, activate them with the keyboard (numbers 1,2, and 3).