After reading a lot of feedback on these discussion boards, we have addressed the following issues in patch 1.01.
1. The game should no longer crash when booting the game without a sound card.
2. An issue with collisions has been resolved on the OSX version of the game whereby liquids would not behave correctly.
3. Additional support for a greater variance of controllers.
4. Actions can now be bound to up to two buttons on a controller.
5. Various minor bug fixes.
We are still addressing some other issues that have been brought up, and will release an update with these fixes as soon as we can.
Thank you so much for your patience and feedback, and as always, we will endeavour to continue making the PixelJunk Shooter experience better going forward.