Here is the full list of all 24 Schacht achievements.
Restart the same Seed more than 20 times.
Play a random seed, no one has ever played before.
Complete a Random, Daily, Weekly or Monthly Challenge for the first time.
Beat someones Highscore.
Dash 148 Times.
Complete all Tutorial Levels.
Customize your character.
Activate 15 checkpoints in one endless run.
Be in the Top 20% of the Daily, Weekly and Monthly at the same time.
Set a Highscore on the Daily, Weekly and Monthly at the same time.
Knock somebody off from rank 1.
Play all Tutorial Levels in succession without dying or restarting.
Complete the Dash Level in less than 45 seconds.
Complete the Wallrun Level in less than 45 seconds.
Complete the Grapple Level in less than 30 seconds.
Complete the EMP Level in less than 65 seconds.
Complete all Tutorial Levels in succession in less than 3 Minutes and 15 seconds without dying or restarting.
Complete any random seed in less than 60 seconds.
Complete any random seed in less than 50 seconds.
Dash and fall for 4 seconds or longer without grappling or landing.
Grapple on 5 different Grapple Points without landing.
Play 42 different random seeds. Don't worry, you will be done in year 10000.
Complete 30 random levels without going back to the Main Menu.