Full list of all 21 Nothing Together achievements.
The base game contains 17 achievements, and there is 1 DLC pack containing 4 achievements.
Together - Reach a combined time of at least 4 weeks
Together - Reach a combined time of at least 7 days
Win a Battle Royale game
Do Nothing for 12 hours
Do Nothing for 24 hours
Do Nothing for an hour
Do Nothing for 30 minutes
Do Nothing for ten minutes
Do Nothing for a minute
Together - Reach a combined time of at least one hour
Together - Reach a combined time of at least 12 hours
Together - Reach a combined time of at least 24 hours
Do Nothing with at least one other player
Start doing Nothing
Do Nothing for an entire week (7 days)
Together - Reach a combined time of at least 12 weeks
Win 10 Battle Royale games
Do Nothing for 4 weeks (28 days)
Do Nothing for 12 weeks (84 days)
Do Nothing for 24 weeks (168 days)
Do Nothing for an entire year (365 days)