Go to where it says continue and type in 4232. This should take you to a screen that lets you select god mode, and what level you want to go to. This code doesn't help much though since the game is already easy enough. (Tip) you can just type in number combinations as well to find out other cheats.
Enter 4232 as a password
1314 - Level 2
1411 - Boss 1
2413 - Level 3
2214 - Level 4
2412 - Boss 2
3114 - Level 5
3312 - Level 6
4111 - Final Boss