At the last level when the scarab destroys that huge door don't go in. Instead, fly with your Banshee to the right side of the building. Go all the way to the part where it ends (on the left side) and land. Then get out of your banshee, walk a little then jump down. The screen will turn white it will take you to Tataurus. It saves you time, since you don't have to fight with the brutes!!