The Halo Reach: Multiplayer Title update for Halo: The Master Chief Collection has 9 achievements worth 80 gamerscore.
Halo: Reach: Find the hidden binary signature.
Halo: Reach: Get a Skullamanjaro in a matchmade Headhunter game.
Halo: Reach: Won a matchmade game of Invasion in the 1st phase.
Halo: Reach: Create a custom map using Forge World.
Halo: Reach: Complete 10 assassinations on enemy players.
Halo: Reach: Headshot 10 enemies while they are sprinting.
Halo: Reach: Kill 10 enemies while using a Jetpack.
Halo: Reach: Trigger a humorous callout on your HUD's position indicator.
Halo: Reach: Access hidden UNSC radio chatter.