You can, just like in Halo 3. It will have more skulls in it too. I'm not 100% sure what all of the names are and their functions, But I will test it VERY soon.
There are no skulls in Halo Reach.
I don't believe you collect any. You just turn them on or off.
no but there are skulls to collect on levels
a harder game!
No. You are given them all.
You click on the tab that says skulls and you click on the skull.
Whenever you collect them, you get cheats. (Go to gamespot.com)
You have to collect all of them in order to get the armor for your soldier
practice practice practice :)
No, only Oddball.
Yes, you can actually. There are 13 skulls in all. If you collect all of the skulls you will get hyabussa armor.
When you collect all of the skulls in Halo 3 you get the awesome Hayabusa Armor that's the only Armor you unlock in Halo 3 by collecting skulls. Note that you can't collect the skulls on the Easy difficulty it has to be on Normal difficulty or higher and also note that I have found all 13 skulls and Bungie put them in Bizarre places I'd recommend going to the related link to find them especially the I Would've Been Your Daddy(IWBYD) skull it's the hardest to get.