1. On Windows 7, alt-tab does not work properly. The game window stays on top, and you need to hit alt-ctrl-del, then go back to switch windows.

2. The camera gets stuck under water. This can be seen when going under the lake at HQ, and makes the story mission where you have to rescue the miners difficult, as the screen goes black once the camera is brought above the level of the lava, and resets to right below you when jumping out. You need to step on a platform to stop this occurring.

3. When an objective appears at the bottom of the screen (boss health / button counter / water turbine counter), the icon shows up as a white square.

Screenshot of 3: http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=946613281