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LEGO Batman

LEGO Batman

1,5141,00046
LEGO Batman
Sidekick.

Complete a level in co-op.

Sidekick.0
4 guidesOffline Game ModeCooperativeMain Storyline
Tasty PastryTasty Pastry343,872
14 Oct 2010
22 1 0
While in the batcave set up a second controller, either by yourself or with a friend. As z0rrofox mentioned you can use a guitar hero controller if you need to (or a joystick or a whatever). You should then complete a level, in either story mode, and the achievement should pop upon completion.

Some tips:
It's easier to do this with a second person because you can only move as long as both people are moving with the screen.
It's easier to do this with a second person because the game is made for teamwork.
The first levels are obviously going to be the easiest.