Yep, considering Halo2 is so easy. All they do is add a couple more enemies and you die faster... so? Doesn't really add to the challenge, just can't rush.
Except: What's worse than jackals?- jackals with sniper rifles on legendary.
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When a jackel is on your team and he has a shield...give him a sniper rifle or a carbine. He can use the sniper rifle/carbine with his shield on. Its awesome