You unlocked the special ability of Roman's taxi.

Complete story mode on Easy difficulty

Defeat the giant Titan Ivy plant

Venture into Killer Croc's lair and come out alive

Earn 111 Stars in Career

Earn Platinum level on a Career Challenge

Defeat two Titan Henchmen at once

Streak through an entire song without missing a note on medium or harder difficulty

Hint: **y O******

String up one henchman and drop him to surprise a second (any play mode).

Solve 25% of riddler challenges

Face your biggest fears and keep your sanity

Gain access to Administration after it is locked down by the Joker