Nothing has been said about campaign skulls as of August-21-2010
But Bungie recently had an interview about campaign and said there will be secrets to unlock in the campaign; if this means skulls or not im not sure; but if i was to take a guess id say no because there are no achievements for skull collecting or other things like vidmaster: annual or deja-vue
Hello, I'm not the same person talking above, i am kronos1006. I am editing. There are in fact skulls in the campaign, and the unlock talked about above are actually bits and pieces of Master Chief's journal called data cores. They are hidden all around the maps in the campaign, almost impossible to find without the help of...the internet. So i hope i answered your question. Remember, the guy above and me aren't the same guys, so the credit goes to me (see what i did there? CREDIT. That's the money in halo:reach. I am a comedy master)
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The fastest way to rank up is to boost in campaign. Search "halo reach campaign boosting" on youtube =)
In the wave options when customizing a firefight game.
I don't believe you collect any. You just turn them on or off.
Halo Reach has the words "Bastard" and "Bitch." Nothing else from what I have heard through the entire campaign.
Halo Reach technically has 10 levels, one of which is just a cutscene, so 9.