Grunt in Barrel, GRD Doll switch, and Hidden picture of Damnation

This is a special Egg post because we have three eggs all in one! We thank the same poster who posted the last Egg on the "GRD Doll Switch" which you can see in the list for Halo Combat Evolved Anniversary. But here we have how to get the"Grunt in a Barrel", "GRD Doll" without glitching the map in Forge mode, and where the other hidden map picture is of "Damnation" from halo Combat Evolved. There is a very helpful tutorial below so you can follow how to preform these Easter Eggs and find them. We once again thank you guys for theses Eggs, without all of you this wouldn't be the Halo Easter Eggs Community we are today! :) So this is a special post, we have never had 3 Eggs in one.