Here is the full list of all 16 Neon Prism achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Use slow 50 times.
Use slow 15 times.
Use blink 50 times.
Use slow 5 times.
Collect 50 medals
Get gold medal on every level.
Finish last level
Use blink 15 times.
Collect 10 gold medals.
Collect 10 silver and gold medals.
Use blink 5 times.
Use slow.
Use blink for the first time.
Collect 10 medals, bronze or better.
Finish first level
Finish tutorial level