Some more bugs I have found:
When you start at a saved point you can choose your weapons. If you die and it restarts you at that part of the level again you don't get to choose your weapons and it doesn't remember what you did choose so you have the wrong weapons for the mission every time unless you quit and restart the level!!!!!
If you are standing on a ledge and you start the rocket pack it goes in the direction of the mouse cursor, not where the aiming reticle is. As you cannot see the mouse cursor you shoot off in some random and unexpected direction. I discovered this after nose diving into the ground twice in a row!!!!