Halo 5: Guardians achievements

Halo 5: Guardians

4.3 from 5535 votes

There are a maximum of 73 Halo 5: Guardians achievements (65 without DLC) worth 2,995 (1,250)

134,851 tracked gamers have this game, 4,439 have completed it (3.29%)

Achievement Details

One for All in Halo 5: Guardians

One for All16 (10)

Complete any co-op Mission on Heroic difficulty.

  • Unlocked by 49,326 tracked gamers (37% - TA Ratio = 1.64) 134,851  

Achievement Guide for One for All

283,271 (145,140)
Achievement won on 27 Oct 15
TA Score for this game: 2,995
Posted on 27 October 15 at 09:37, Edited on 01 November 15 at 22:00
This solution has 24 positive votes and 3 negative votes. Please log in to vote.
Completed any Mission in co-op on Heroic difficulty or above.

The actual achievement description is misleading as there are no co-op missions in Halo 5, unlike Halo: Spartan Assault for example. What you have to do is complete any campaign mission with at least one other player. Halo 5 does not have a split-screen option either.

For this achievement you will need an internet connection and an XBL Gold account enabled Xbox One. Whilst you can complete a co-op mission with only one player, you will not get the achievement. You need one, two or three other players.

From the main menu select Campaign -> Co-op and press cn_A

Select any Mission and set the Difficulty to Heroic. Missions 4, 9 and 11 are quick and easy to complete, but you can get this achievement on any Mission.

Press cn_X to bring up the Roster, then press cn_RB to select the list of Friends.

Select a friend and press cn_Y to send an invite, then press cn_B to go back.

Once your friends have joined start the mission, and when you complete it you will all get the achievement.
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