Metal Slug Anthology Cheats & Tips

If you want money or to unlock things easily, the second you defeat the final boss, save the game and watch the credits then get out of the game your on and load the game you were on, you'll be at the point where the boss is dead and you will win more coins with out playing the whole game again. Repeat this to the rest and after doing the cheat to all of them on different difficulty, you'll unlock the extra gallery, desktops and music.

P.S. you only need to finish metal slug 6 once on any difficulty to unlock the harder extras.