Fell 100 Footbots.
Find a way inside the TCRI Building.
Watch a bonus conversation.
Mangle 100 Mousers.
Perform 100 Shell Kickers successfully.
Rescue a captured turtle.
Find a Health upgrade.
Perform 50 Shell Kickers successfully.
Find a Shuriken upgrade.
Seek out wisdom from Splinter.
Return to the Lair and undergo training.
Take Casey's advice to upgrade a Shell Kicker.
Fully upgrade Leo's Shell Kickers.
Fully upgrade Donnie's Shell Kickers.
Fully upgrade Raph's Shell Kickers.
Fully upgrade Mikey's Shell Kickers.
Find every Shuriken upgrade.
Find a Smoke Bomb upgrade.
Find every Smoke Bomb upgrade.
Find a Chi upgrade.
Find every Chi upgrade.
Find every Health upgrade.
Knock down 100 Kraang Droids.
Maim 300 Mousers.
Finish 300 Footbots.
Quell 300 Kraang Droids.
Achieve 100% Completion.
Finish the game in under 4:00.
Finish the game in under 2:30.
Finish the game in under 1:00.
Finish the game without upgrading any Shell Kickers.
Watch every bonus conversation.
Swat Baxter Stockman.
Beat Rahzar without taking damage.
Find Mikey's lost comic book.
Sneak into the Warehouse district.
Trounce Tiger Claw
Teleport into Dimension X.
Neutralize the Newtralizer
Give Shred-head something to think about.