Here is the full list of all 21 Paper Beast achievements.
Begin the adventure for the first time
Drop your first entity in the Sandbox
Finish the adventure
Unlock all entities for the Sandbox
Save the Papyvorus from the Predator
Finish chapter 6.4 without the tape recorder getting grabbed
Ground Control to...
Set the sun on the horizon
Observe the Data Sea
Tie a balloon to a Predator
Carry the tape recorder to the sinkhole area
Catch a shooting star as it flies
Find the heat block in the first chapter
Use a blast capsule
Uproot a large desert plant
Plant a tree in the Sandbox
Start a storm in the Sandbox
Use terraformation in God mode
Have at least 8 insects in the Sandbox
Have at least 8 Papyvorus in the Sandbox
Stay fresh