Enable hardware accelerated PhysX to get fancy cloth effects like spiderwebs shaken by a gust of wind.
The game is built with Unreal Engine 3, so you can use the usual tweaks (http://www.tweakguides.com/UT3_1.html).
Get demo from NZONE (http://www.nzone.com/object/nzone_batmanaa_downloads.html).
(http://img5.imagebanana.com/img/cnrntota/thumb/batmanapex.jpg) (http://img5.imagebanana.com/view/cnrntota/batmanapex.jpg)
If you have a regular joypad, install XBOX360 Controller Emulator (http://www.tocaedit.com/IB/index.php?automodule=downloads&showfile=4).