Full list of all 29 Next Up Hero achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox One.
Have your Hero Die
Complete a Venture with a 'S' Rank
Choose to Extend a Venture
Choose to Kill a Boss
Unlock 35 Abilities
Unlock 9 Prestige Characters
Summon 8 using Ancients
Summon 4 Ancients on a single level
Defeat 100 Buckles
Participate in a completed, Epic Length Venture
Participate in a completed, Long Length Venture
Successfully navigate a Darkness Level
Successfully complete a Single Enemy Encounter
Successfully complete a Time Limit Trial Level
Successfully complete a Mayhem Level
Defeat 100 Dark Heroes
Participate in a Venture which gets completed with at least 500 Levels
Raised up the Echo of a Registered Streamer
Raise up 15 Echoes in a single level
Raise 10 of the same House Echoes in a single level
Control a Follower while Spectating
Complete 5 straight levels, without dying, on a single playthrough
Invest enough Prestige to trigger a random Rare Enemy
Get killed by every unique enemy in the game
Kill 3 Enemies with 1 Prestige Paladrin Shield Throw
Raise 15 Symposer Echoes in a single level
Complete a Venture with a 'A' Rank
Complete a Venture with a 'AA' Rank
Completed a Venture with a 'AAA' Rank