Here is the full list of all 32 Planet Coaster achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Create a coaster with 10 moments of airtime.
Unlock Princess Amelie's Fairy Tale.
Achieve a monthly profit of $10,000.
Create a coaster with 5 moments of airtime.
Achieve a Park Rating of 1000.
Complete a research project.
Get a coaster up to 100mph.
Get a coaster up to 150mph.
Get a coaster up to 200mph.
Create a coaster with an 80m drop.
Create a coaster with a 150m drop.
Build a 750m long coaster.
Build a coaster 1500m long.
Build a coaster 2500m long.
Gain a gold star in career mode.
Spend $10,000 on marketing in one month.
Gain a silver star in career mode.
Gain a bronze star in career mode.
Create your avatar and place them on the globe..
Gain all the stars in career mode!
Unlock DexR's Science Shenanigans.
Unlock King Coaster's Royal Decree.
Complete a challenge.
Complete five challenges.
Complete ten challenges.
Repay a loan of $20,000.
Train a member of staff to the highest level.
Wow guests with a coaster with 15 moments of airtime.