Lego Batman: Unlock Bat-Tank Sep 28, 2008 | Posted by admin | PC, PS2, PS3, PSP, Wii, XBox 360 | Unlock the Bat-Tank vehicle in Lego Batman for the PS2, PS3, Xbox 360, Nintendo Wii, PSP and PC. 1. Access the computer in the Batcave or the hacked computer at Arkham Asylum. 2. Enter the code KNTT4B.