The latest patch addresses the following issues:

• Fixed crash on game start on Linux.
• Added Achievements button to Extras menu.
• Fixed screen shake continuing if you die when the laser walls are active.
• Fixed some 'external link' GUI buttons remaining highlighted after selecting them.

A huge thank you to forum user BlaXpirit for support with the crash, and apologies for the inconvenience it caused players on Linux.

If you experience any other problems, please post them on the discussion boards and I'll do everything I can to fix them.

Happy switchin' 'n' shootin'!