The MAC is my only defense against a scarab! Here is easy solution, don't make a scarab against Cutter.
Halo Wars strategy timeline:
1. If you don't use hawks, you lose
2. If you don't rush gauss, you lose
3. If you don't rush as a Covenant, you lose
4. If you don't feed you lose
5. Now, if you don't Cryo glitch, you are going to lose.
I <3 ODSTs