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.
Defeat all Arena Challenges
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 Big Chill's Upgrade Tokens in Single Player
Collect both of Bullfrag's Upgrade Tokens in Single Player
Collect both of Bloxx's Upgrade Tokens in Single Player
Collect both of Crashhopper's Upgrade Tokens in Single Player
Collect both of FourArm's Upgrade Tokens in Single Player
Defeat 25 Toad Tank Mechs
Complete the game on Hero Difficulty
Complete the game
Complete Level 6
Collect all the Arena Challenge Tokens
Defeat 25 Toad Assault Mercs
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
Run 42,195 meters
Detonate 150 Explosive Walls with a projectile
Complete Level 4
Collect both of Swampfire's Upgrade Tokens in Single Player
Smash 150 Breakable Walls
Leap over 150 Jumpable Walls
Complete Level 3
Defeat 25 Ice Infantry
Defeat 25 Toad Battlers
Detonate 75 Explosive Walls with a projectile
Defeat 25 Gas Infantry
Jump over 20 pits
Smash 75 Breakable Walls
Leap over 75 Jumpable Walls
Complete Level 2
Detonate 25 Explosive Walls with a projectile
Complete Level 1
Collect 1,000 Omnitrix Energy Orbs
Defeat 25 Fire Infantry
Smash 25 Breakable Walls
Leap over 25 Jumpable Walls
Use the "Return to Azmuth" option in the Pause Menu
Defeat 25 Commandos
Change from Ben back into an Alien Form without dying
Complete the Tutorial Level