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