This thread reminded me to mention this.
Is it just me, or do the rockets fired from the RPG Launcher randomly bounce off the Apache? At first, I thought maybe it was the Apache shooting them down, like the Combine Gunships do. But on closer inspection, I’m convinced this is a bug. In both the Surface Tension battle and the one in my level, about 20% of the time, fired rockets bounce off the Apache, whether they are homing or not. And it’s not a subtle bounce - it’s literally an abrupt 90º turn in the opposite direction.