Full list of all 44 Ben 10 Omniverse 2 achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox 360.
Run 42,195 meters
Smash 25 Breakable Walls
Smash 75 Breakable Walls
Smash 150 Breakable Walls
Leap over 25 Jumpable Walls
Leap over 75 Jumpable Walls
Leap over 150 Jumpable Walls
Detonate 25 Explosive Walls with a projectile
Detonate 75 Explosive Walls with a projectile
Detonate 150 Explosive Walls with a projectile
Jump over 20 pits
Collect 1,000 Omnitrix Energy Orbs
Break 100 Floating Energy Containers
Complete the Tutorial Level
Complete Level 1
Complete Level 2
Complete Level 3
Complete Level 4
Complete Level 5
Complete Level 6
Complete the game
Collect both of Four Arm's Upgrade Tokens in Single Player
Collect both of Swampfire's Upgrade Tokens in Single Player
Collect both of Cannonbolt's Upgrade Tokens in Single Player
Collect both of Crashhopper's Upgrade Tokens in Single Player
Collect both of XLR8'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 Astrodactyl's Upgrade Tokens in Single Player
Collect both of Gravattack's Upgrade Tokens in Single Player
Defeat 25 Toad Battlers
Defeat 25 Fire Infantry
Defeat 25 Toad Assault Mercs
Defeat 25 Commandos
Defeat 25 Ice Infantry
Defeat 25 Powerlifters
Defeat 25 Toad Tank Mechs
Defeat 25 Gas Infantry
Collect all the Arena Challenge Tokens
Defeat all Arena Challenges
Use the "Return to Azmuth" option in the Pause Menu
Change from Ben back into an Alien Form without dying
Complete the game on Hero Difficulty