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