I finally beat Contra 4. Man the last level, especially the last boss, got frusterating. If your looking for a good Contra experience, then Contra 4 is the game to get! The 2 last levels aren't even avaliable on easy, so you'll really have to improve on your skills if you want to see the end of the game. But once you beat the game, even on easy, you can unlock challenge mode. This mode puts you through a series of tests throught parts of the levels. Things like surviving a chuck of the level with enemies swarming around you, all the way to finishing with a certain hit percentage or limited ammo. Theres quite a few unlockables as well, including more characters, comics, and the first 2 contra games for the NES! The Konami Code is also in the game, if you pause the game, press up, up, down, down, left, right, left, right, B, A, it powers your weapons up to max, but BEWARE. If you enter it a 2nd time, it kills your character. You have been warned.