Identification of Batman / Joker Set I went through the DC Comics Super Heroes and Batman categories of Brickset without being able to identify the origin of this bag of pieces.





The only information are 135149 and a year, 2011, written on it, but, apparently, this does not give any concrete information. The number 6062861 is written on a white box, and numerous pieces should give hints to identify it (Joker, Batman, 4 wheels, dynamite, flame, a big red "catapult").

It looks that it is not inappropriate to ask here for such an information (cf. Jourbac comment), and I don't know how to use Bricklink.
Is it the first part of a larger set?
This specific piece, a Tile 2 x 4 with Batman Logo Pattern,



turns out to be one of the first piece that comes out when looking for Batman at BrickLink, and appears only in one set, the "Batman: Defend the Batcave" set: