I am also experiencing a lockup with this game. In my case the lockup happens
before I get to the main menu right after starting the game. I have a radeon r9
270x, and I am using the radeonsi driver (version 7.5.0), mesa 11.0.3, llvm
3.7.0, xorg server 1.17.2. The OS is Linux 4.2.2 64 bit.

# glxinfo|grep -i opengl
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD PITCAIRN (DRM 2.43.0, LLVM 3.7.0)
OpenGL core profile version string: 4.1 (Core Profile) Mesa 11.0.3
OpenGL core profile shading language version string: 4.10
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 11.0.3
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.0.3
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00

# sudo lspci |grep -i vga
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Curacao XT [Radeon R7 370 / R9 270X/370 OEM]