Here is the full list of all 26 Extricate achievements.
Beat all levels in the game
Beat all levels in section A
Beat all levels in section B
Beat all levels in section C
Beat all levels in section D
Beat all levels in section E
Complete all levels in speedrun mode
Beat speedrun mode in less than 1 hour and 30 minutes
Beat speedrun mode in less than 1 hour
Beat speedrun mode in less than 30 minutes
Reach a speed of 10 m/s
Reach a speed of 15 m/s
Reach a speed of 20 m/s
Obtain the diamond medal in every level
Obtain the diamond medal in 25 levels
Obtain the diamond medal in 10 levels
Obtain your first diamond medal
Obtain atleast gold medal in all levels
Obtain atleast gold medal in 25 levels
Obtain atleast gold medal in 10 levels
Obtain atleast gold medal in 1 level
Do a speedrun mode without dying
Die 100 times
Die 1000 times
Jump 1000 times
Jump 10000 times