Here is the full list of all 28 Ben 10: Power Trip achievements.
Find all the Luck Upgrades
Find all the Trinkets
Complete all the Scooter Challenges.
Save all the citizens from monsters.
Destroy 10 Decibel Concerts
Defeat Hex and Save Strudelbek
Find the Omni-Guard
Defeat the Mountain Power Spring
Find all the Power Upgrades
Destroy 5 Decibel Concerts
Complete your first Side Mission
Fast travel using the Rust Bucket
Unlock Diamondhead
Unlock Rath
Defeat the City Power Spring
Unlock Shockrock
Unlock XLR8
Defeat the Forest Power Spring
Unlock Four Arms
Defeat your first Void Ruin
Choose your first upgrade
Unlock Heatblast
Destroy All Decibel Concerts
Complete everything in Grashugel Forest
Complete everything in Strudelbek City
Complete everything in Mt. Eisburg
Collect all the Records
Find all the Toughness Upgrades