We have 1 cheats and tips on PlayStation 2. If you have any cheats or tips for Metal Slug 4 please send them in here. We also have cheats for this game on : Xbox
You can also ask your question on our Metal Slug 4 Questions & Answers page.
Unlock Alternate Ending Sequence:
When you defeat the final Boss you will be taken to another room where you must run from explosions. Instead of escaping get yourself killed by the explosions and the ending sequence will be different.
Unlock Art Gallery:
Complete the game to unlock the art for that character in the gallery.