Here is the full list of all 25 Entropy Rising achievements.
Collect a construction block.
Collect all construction blocks.
Startle a lava thrower.
Startle all lava throwers.
Find a hidden painting.
Find all hidden paintings.
Finish Entropy Rising.
Revert death.
You meet expectations
Get the Grabber.
Upgrade from Grabber to Gravigun.
You find the place where the small spheres grow into big spheres.
Collect half of all construction blocks.
Die in all ways possible.
Startle 3 lava throwers in quick succession and survive.
Die from a gravi-bubble or its contents.
Find a way to save what you grew fond of.
Use the minimum number of Gravi-bubbles for each level.
Beat the time minimum for each level
Complete each level without using time reverse.
Complete each level without dying.
Achieve a 3 Star Rating for each level.
Startle half of all lava throwers.
Find half of all hidden paintings.
Start a game with a map-pack downloaded from the steam Workshop.