Here is the full list of all 28 Exo One achievements worth 1,000 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox One.
Complete the game in less than 180 minutes
Complete the game in less than 90 minutes
Complete the game in less than 60 minutes
Reach a great height on Sagan IV
Reach a great height on Gnowee
Reach a great height on Quirinus II
Reach a great height on Nautica
Reach a great height on Nautica (Part 2)
Reach a great height on Daramulum
Reach a great height on Sojournus
Reach a great height on Coelus
Reach a great height on Obias III
Reach a great height on Darwin III
Collect every energy pickup
Complete the game
Break the sound barrier
While gliding, stay close to the ground for over 5 seconds
Glide close to the ground and over the speed of sound for 5 seconds
Keep your speed above the sound barrier for 3 seconds on Sagan IV
Keep your speed above the sound barrier for 5 seconds on Gnowee
Keep your speed above the sound barrier for 6 seconds on Quirinus II
Keep your speed above the sound barrier for 6 seconds on Nautica
Keep your speed above the sound barrier for 6 seconds on Nautica...again
Keep your speed above the sound barrier for 2 seconds on Daramulum
Keep your speed above the sound barrier for 3 seconds on Sojournus XXIII
Keep your speed above the sound barrier for 9 seconds on Darwin III
Keep your speed above the sound barrier for 6 seconds on Obias III
Keep your speed above the sound barrier for 9 seconds on Coelus