The great thing about the Xbox 360, PS3, and Wii is their capability to time travel. Well, kinda. Old games like Teenage Mutant Ninja Turtles and Super Mario 64, take gamers back to a much more simpler time. This achievement video focuses on just that. If you've loved playing the Metal Slug games at the arcade, why not bring it to your Xbox 360? In this tutorial, you'll find out how to unlock the 100 Morden achievement in the newest game, Metal Slug XX. It's a fun side-shooter filled with stupid gags, hard bosses, and awesome guns. So check it out and enjoy the good times!