It runs at an awful resolution and I couldn't increase it without turning off fullscreen mode. The movement is fucking terrible and feels like you're walking on iced, the screen also has a seizure when you touch walls and other objects, stuttering madly with a red box at the top. There was even a bug on the second level which despawned the heli copter and i was unable to progress. It's a shame because I've heard this game is great but this port to GoG is clearly terrible.