Nothing, there is no achievement, or challange, nor are credits awarded for finding all of them, they were placed in the game for the hardcore halo fans to find and discover some extra insight of the halo universe, otherwise they have no point except for the satifaction of tracking them down. Every mission contains 2, 1 that can be found on all difficulties, and 1 that only appears on legendary.
i think they work like an invisible floor.
Nothing, but they give you hints about what bungie might do next with the halo series
The data pads are whats on the tin it's a pad containing data of prvios happanings on other planets and other things like a dictionary of the past
if you mean the tac-pad armor piece, it just makes you look cooler.
Not sure each speifix. Try going on youtube and searching up the achievement hunter: datapads 1-9 or 10-18 video
If you are talking about the beta you can't transfer data.
Halo reach is older
no, Masterchief is not in Halo: Reach. Halo: Reach is set before the discovery of Halo, if you have or Know about the Halo book: The Fall of Reach, it is a closer view of the plant reach. but there are some other Spartans in it!
halo reach is the bomb
There are no skulls in Halo Reach.
after Halo reach,there is no more In total, there is :Halo 1,Halo 2, Halo 3, Halo ODST, Halo wars and Halo reach
No, Halo Reach shows what happened before Halo 1. In fact, in one of the missions in halo reach, you can see Master chief