As I've suspected before, here's something nifty;
Slug Gunner is unlockable in Metal Slug 3D. Click the image below to watch a video (8:32 - 34MB) of it.
To unlock it, you must collect four special parts;
Core: Gunner CoreCaterpillar: Gunner LegsCannon: Gunner CannonVulcan: Gunner ArmsArmor is irrelevant.
Unfortunately, it can't go into the tank mode. It can only walk and fly. (For like 2 seconds, anyway)
Also, I've created a shorter video that explorers the menu showing various categories and sub-categories in it. Click the above image to watch the video. (3:55 - 16.1MB) Yep, I've gotten
S ranks for all missions on all three difficulties, upgraded all of the characters, and unlocked all Slug parts.
The videos have been uploaded to our
trailers section.