Swat Baxter Stockman.
Knock down 100 Kraang Droids.
Fell 100 Footbots.
Mangle 100 Mousers.
Find a Smoke Bomb upgrade.
Find a way inside the TCRI Building.
Rescue a captured turtle.
Perform 100 Shell Kickers successfully.
Perform 50 Shell Kickers successfully.
Find a Health upgrade.
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 every Smoke Bomb upgrade.
Find a Chi upgrade.
Find every Chi upgrade.
Find every Health upgrade.
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 a bonus conversation.
Watch every bonus conversation.
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.