Full list of all 14 METAL SLUG 3 trophies - 11 bronze, 2 silver and 1 gold. It takes around 3-4 hours to unlock all of the trophies on PlayStation 4.
Complete all the missions
Defeat any boss in the game with the METAL SLUG ATTACK
Clear Mission 2 as a zombie
Complete Mission 2 with no continue
Complete Mission 1 with no continue
Reach the icy cave's exit with the Elephant Slug
Start Mission 1
Complete Mission 3 with no continue
Complete Mission 4 with no continue
Complete Final Mission with no continue
Achieve over 3,000,000 points
Ride all the Slugs
Play all the routes
Find and save Hyakutaro Ichimonji