Here is the full list of all 10 Twitch achievements worth 0 gamerscore. It takes around 100-120 hours to unlock all of the achievements on Xbox One.
Watched a broadcast on Twitch that has more than 100K concurrents.
Watched 100 hours of live video on Twitch.
Watched a single channel on Twitch for more than 8 hours consecutively.
Watched a minute of live video on Twitch, in every hour of the day.
Watched 5 hours of live video on Twitch between the hours of 12am and 4am.
Watched 10 hours of live video on Twitch channels that have less than 10 viewers.
Watched 10 hours of live video on Twitch between the hours of 7pm and 11pm on a weekday.
Watched 1 hour of live video on Twitch channels that have less than 10 viewers.
Watched 10 hours of live video on Twitch.
Watched 1 hour of live video on Twitch.