Here is the full list of all 45 Ben 10 Omniverse 2 trophies - there are 34 bronze, 7 silver, 3 gold and 1 platinum.
Earn every Trophy in the game.
Collect both of FourArm's Upgrade Tokens in Single Player
Break 100 Omnitrix Energy containers
Collect both of XLR8's Upgrade Tokens in Single Player
Collect both of Astrodactyl's Upgrade Tokens in Single Player
Collect both of Bullfrag's Upgrade Tokens in Single Player
Defeat all Arena Challenges
Defeat 25 Toad Tank Mechs
Collect both of Bloxx's Upgrade Tokens in Single Player
Complete the game on Hero Difficulty
Complete the game
Complete Level 6
Collect all the Arena Challenge Tokens
Defeat 25 Powerlifters
Collect both of Cannonbolt's Upgrade Tokens in Single Player
Collect both of Gravattack's Upgrade Tokens in Single Player
Complete Level 5
Collect both of Big Chill's Upgrade Tokens in Single Player
Complete Level 4
Smash 150 Breakable Walls
Smash 75 Breakable Walls
Collect both of Swampfire's Upgrade Tokens in Single Player
Complete Level 3
Defeat 25 Toad Assault Mercs
Defeat 25 Ice Infantry
Smash 25 Breakable Walls
Defeat 25 Toad Battlers
Collect both of Crashhopper's Upgrade Tokens in Single Player
Detonate 150 Explosive Walls with a projectile
Defeat 25 Gas Infantry
Detonate 75 Explosive Walls with a projectile
Use the "Return to Azmuth" option in the Pause Menu
Complete Level 2
Run 42,195 meters
Jump over 20 pits
Leap over 150 Jumpable Walls
Complete Level 1
Defeat 25 Fire Infantry
Leap over 75 Jumpable Walls
Collect 1,000 Omnitrix Energy Orbs
Detonate 25 Explosive Walls with a projectile
Leap over 25 Jumpable Walls
Defeat 25 Commandos
Complete the Tutorial Level
Change from Ben back into an Alien Form without dying