[quote name='Spybreak8']I'm doing the last mission and there are scarabs galore, one at a time but you'll face them more than once. Use the Cryo Bomb and then the Carpet Bomb, follow that with a MAC Blast and you'll severely weaken the thing. In multi, skirmish for me, I had to battle two Scarabs and the Cov leaders, Prophet of Regret/ Arbiter, and I was Anders. I kept bulding, cobras, scorpians and gremlins. Really if they have a scarab you should have plenty of options in taking it out. Upgrade turrets if they're trying to take out your base, use air units as well. Yea I should have used Hawks in my skirmish since I was Anders. ><
I didn't think the Spartan could hijack it, never worked for me anyways.[/quote]
[quote name='LinkinPrime']Use the Spartans to hijack the scarabs and make them your own...upgrade your turrets to be more effective against vehicles[/quote]
Yeah. I thought the Scarab was the only unit that was unhijackable by Spartans. But turrets didn't help me at all. I had them set to the counter-vehicle turrets but it barely scratched the Scarab. Plus I had the Arbiter & his jacked up Rage along w/ a Brute Chieftain w/ his Gravity Hammer. I was able to stop their specials w/ the Diffusion Bomb but they still had their powerful melee attacks & sapped my bases (yes, plural

). Plus the Scarab has no specials that can be blocked. And Hawks are only available to Anders... I was Cptn. Cutter.
[quote name='seanr1221']Any tips on defending this?
I was just playing a 2v2 online, and the other players were the covenant.
They brought over their two leaders and a tiny grunt army and just destroyed my base, I was building up my resources so I had like...3 guys and obviously I got crushed.[/quote]
If it's early game, I usually set the turrets to flamethrower to prevent early rushes and flamethrowers work very well against the Arbiter & Brute Chieftain. The Prophet of Regret is considered a vehicle* so your turrets would need to be set as such but I find it easier to drop a Diffusion Bomb to disable his special attack and attack w/ infantry.
*early game only as his final upgrade makes him a full fledged air unit and he won't have that until mid/late-game.