No. As soon as you pick up the skull (be sure to pick it up), it will be recorded as found. For some skulls, there is an achievement associated with finding it. As soon as you see this achievement, the skull is considered found. You might want to finish the level anyways, just for fun, but it is not necessary.
I am 100% sure of this. I have tried it both ways, and both ways I get the skull.
P.S. Try to get the skull on Floodgate. It's great.
yes but you can only find the skull if you play the whole mission from alpha point
Skull Haven I play Halo 1 though
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.
You can play on any difficulty you just have to find them
You have to do the leval where you stick your dick in tartares's ass! the skull is actually his boner!
You have to play on at least normal.
You can play Mythic on halo 3 by activating the skull before you start the game.
finish the whole game.
they are all avalable when you play story mode just go down the list and you will find all the skull=)
no.... im a holo freak.... in fact to get skulls in halo you find them when you play each level... so each level has a skull hidden in it... you just have to look for it...
play on normal or higher. start from the start of the mission and go to the location
you can even drop it, it is saved to your skulls list. or you can melee every enemy you encounter