There are no skulls to find. They're all provided. LAME!!! I admit, I never found all of them without gamefaqs, but still, unlocking them was a huge part of Halo 2&3's replayability.
PS, thank you everyone who voted in my poll http://www.escapistmagazine.com/forums/read/9.232404-Poll-what-difficulty-should-I-play-Halo-Reach-on#8168398.
I'm playing Heroic Co-op with my friend thirdhandtaters
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PPS. ALso, there's no sergeant johnson for alternate dialogue
PS, thank you everyone who voted in my poll http://www.escapistmagazine.com/forums/read/9.232404-Poll-what-difficulty-should-I-play-Halo-Reach-on#8168398.
I'm playing Heroic Co-op with my friend thirdhandtaters
.PPS. ALso, there's no sergeant johnson for alternate dialogue