Yes, you need to set difficulty to Normal most of the time (Some skulls require Legendary) and you must start the mission from the beginning. You can't jump in half-way if you want to collect skulls.
Alot of skulls are set near the begining aswell so it is a good idea to start at begining anyway even if your not looking for skulls.
choose your level, then click X, find the skull(s) you want and click then, then press b and start your mission
If you don't start the level from the beginning the skull won't appear. If you did start from the beginning i don't know.
You have to be on normal or higher. However, the skull will not spawn if you start from a checkpoint, you must start from the beginning of that level.
play on normal or higher. start from the start of the mission and go to the location
yes you do need to start at the begging or the skull wont show up
No you cannot, you must start from the beginning of the level. It also must be on normal, heroic, or legendary difficulty, or the skull will not show up. Even if the skull may be at the end of the level, you must still start at the beginning If you are trying to complete the game on legendary, and you have passed the spot, I recommend beating it first, and then replaying it on normal difficulty. Good Luck.
Mp3 Skull
After the 3rd guard, behind the box.
No but to find the skull in that level you must start from the beginning of the level and be on either normal,heroic or legendary.
To select the skull menu in Halo 3, go to the main menu and choose "Campaign." After selecting your desired mission, press the "Start" button to access the pause menu. From there, navigate to "Skulls" to view and toggle any available skulls for that mission. This allows you to customize gameplay with various modifiers.
You have to start from the beginning of the level and when you use the grav lift, it's on the fourth, top, floor in the hallway after the room with all of the exploding crates.
This is by far the easiest skull to get. At the very start of the mission, jump up to the red cabinet thingy. When you're up there, jump again to the pipe to the right(if you're facing the screens) and keep going and you will find a skull. Yay! You found the Black Eye Skull! I hope you are getting closer to getting the awesome Hayabusa Armor o_O