Here is the full list of all 50 Teenage Mutant Ninja Turtles: Mutants in Manhattan achievements worth 1,000 gamerscore.
Used any character at least 50 times
Transported 30 bags of money
Transported 30 Krang Bombs to a portal
Defeated 10 Stone Warriors with turrets in Wingnut's stage
Transported gold bars 30 times
Transported 10 Chemical Weapons to a Portal
Protected 30 ATM machines
Protected 10 Pizza Trucks
Upgraded 30 Charm Effects
Obtained all Collectibles
Defeated 5 enemies at once by blowing up a Foot Soldier carrying a bomb bag
Destroyed a rampaging car with a drum can
Traversed a total of 150 miles
Defeated the 4 Krangdroids with your conventional weapons in Mega Krang's stage
Defeated 5 enemies with both Turbo Mode and Berserk activated
Completed Hard mode
Ate 100 pizzas
Detonated 100 drum cans (including proximity mines)
Dismantled Charms 30 times
Disarmed 30 time bombs
Survived the elevator section at the TCRI building without taking any damage
Obtained 50% of all Collectibles
Completed a gold bar mission without the carrier being hit even once
Used Turtle Switching to defeat 1 enemy with all 4 Turtles
Traversed 1 mile in the Residential Area without touching the ground
Obtained 25% of all Collectibles
Defeated Rocksteady and Bebop by letting them get run over by a train
Defeated a Secret Boss
Used a Combo Attack to defeat 6 enemies at once
Made everyone perform a Communication Action during the snapshots when a boss is defeated
Completed Easy or Normal mode
Destroyed a helicopter
Found the secret room in the TCRI building
Destroyed 30 cameras and laser devices containers
Traversed a total of 32 miles
Experienced all of the Krang UFOs' status effects
Watched Mikey do his co-op move finishing pose during the snapshots when a boss is defeated
Turned all Turtles into zombies simultaneously by touching contaminated water
Climbed to the highest point in Karai's stage and did a little dance
Entered the Pizza Room during the snapshots when a boss is defeated
Activated the ceiling switch during the battle with Slash
Collected 10,000 Training Points
Equipped at least one Emblem to your profile
Completed a stage without being spotted once (outside of Missions)
Ate a pizza during the snapshots when a boss is defeated
Hung out outside of an enemy hideout for at least 10 seconds
Defeated 5 enemies with 1 drum can
Completed the Tutorial
Grinded rails for 300 feet
Played online at least once