Here is a list of the massive amount of achievements in place for the MCC collection. In total there are 4000 gamerscore on offer and some are tied specific to the selected game, whilst others are not..... Your thoughts?

http://au.ign.com/wikis/halo-master-chief-collection/Achievements

I don't like the one titled, "Back in the day" :(

LASO Runs?

Seriously?

That sounds almost impossible.

LASO shouldn't be hard because I believe you can do it co-op

Co-op isn't going to make it any easier. If even one person dies the entire team goes back to the last checkpoint. That's going to end up one of the hardest achievements ever made. 

I believe that was only evident in Halo 2?

I'm shooting for a 7% total completion :)
Cheer me on mates!

Last checkpoint is better than starting the whole level over. Which is why Co-op is better for LASO.

! I am sure there is an ahcievement for you

It is.......

Herald of the Reclamation

I reckon I could do it, just gonna be really hard when I hit halo 3's flood ship to rescue cortana. That misson was hell on regular modes.