Easter Egg - Alternate ending sequence in Metal Slug 4 | |
| Once you defeat the final Boss, you will go to another room where you must run from explosions. Instead of getting away, let yourself get killed by the explosions and the ending sequence will be different. | |
Unlockable - Art gallery in Metal Slug 4 | |
| Successfully complete the game to unlock the art for that character in the gallery. | |
