Here is the full list of all 43 METAL MAX Xeno Reborn trophies - there are 27 bronze, 12 silver, 3 gold and 1 platinum.
Defeat 100 enemies without them noticing you
Defeat 100 enemies
Visit Iron Base and become mankind's last monster hunter
Survive for 50 days
Acquire all other trophies
Bring the Extinction Meter down to 0
Rescue Toni
Rescue Dylan
Bring the Librodome books to Iron Base
Rescue Ittica
Successfully install and use a Cherbourg
Find all songs for the jukebox
Find all drinks for the bar menu
Find and gather 50 buried items with a metal detector
Buy out all the items in the store
Acquire all ten vehicles
Learn or enhance a Nephtech skill
Advance a total of 15 levels in any skill tree
Have your allies earn a total of 10 skills
Have your allies earn a total of 30 skills
Have your allies earn a total of 50 skills
Bring any character to level 91 or higher
Increase a vehicle's total battle power to 3000 or higher
Defeat the Death Deliverer in the Tokyo Desert
Defeat the Supply Base in the Taito Special Ward
Defeat the Central Battery at Mishuku Base
Defeat Catastropus
Defeat 1000 enemies without them noticing you
Defeat 1000 enemies
Defeat 3333 enemies
Kill 10 or more monsters with a bounty on their heads
Kill 20 or more monsters with a bounty on their heads
Defeat every monster with a bounty on their heads
Deal 1000 damage in a single strike
Deal 3000 damage in a single strike
Enter the Big Atrium
Enter the Taito Special Ward
Explore all of U-Tokio
Visit every map
Open the treasure chest atop Tokio Tower
Open the shutters at the entrance of U-T Shibuya South
Register 10 travel points
Register all travel points