Here is the full list of all 21 Redirection achievements.
Complete a level from the Steam Workshop
Watch the closing credits all the way to the end
Complete every level in the Main Campaign
Unlock WORM in the Robot Arcade, and reach a length of 100 centimeters
Rescue 100 Robots
Void the warranty of 5 Robots
Rewind 100 times
Misplace 5 Robots
Complete a level in the Main Campaign with obstacles left over
Unlock TENNIS in the Robot Arcade, and win one round
Beam down 100 obstacles
Complete the first level in the Main Campaign
Watch the opening cutscene
Complete 10 levels from the Steam Workshop
Complete 50 levels from the Steam Workshop
Unlock every gameplay achievement
Create and test a level in the Mod Editor
Get 100 subscriptions and an overall positive rating on a mod you published to the Steam Workshop
Play 10 different games in the Robot Arcade
Unlock INVADERS in the Robot Arcade, and score over 750 points
Unlock QUEST in the Robot Arcade, and save the kingdom