Here is the full list of all 13 Alteric achievements worth 1,000 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Xbox One.
Complete Chapter 3
Jump up to 4000 times
Find Thomas on level 27
Complete level 12 without deaths
Complete level 6 without deads
Swap worlds 400 times
Complete Chapter 2
Jump up to 2000 times
Die 100 times
Jump up to 1000 times
Swap worlds 200 times
Complete Chapter 1
Swap worlds 100 times