Here is the full list of all 41 Rock Simulator 2 achievements.
Reach Level 100!
Reach Level 200!
Reach Level 300!
Reach Level 400!
Reach Level 500!
Reach Level 1000!
Reach Level 2000!
Reach Level 3000!
Reach Level 5000!
Purchase Lumen!
Purchase Flora!
Purchase Crystal!
Purchase Metal Drip!
Purchase Amethyst!
Purchase Swirl!
Purchase Paint!
Purchase Impasto!
Purchase Piddock!
Reach Level 100 With Basic Rock
Reach Level 100 With Faye
Reach Level 100 With Xaria
Reach Level 100 With Iris
Reach Level 100 With Radia
Reach Level 100 With Obsidian
Reach Level 100 With Frame
Reach Level 100 With Sketch
Reach Level 100 With Lumen
Reach Level 100 With Flora
Reach Level 100 With Crystal
Reach Level 100 With Metal Drip
Reach Level 100 With Amethyst
Reach Level 100 With Swirl
Reach Level 100 With Paint
Reach Level 100 With Impasto
Reach Level 100 With Piddock
Find All Hidden Rocks On Hideaway!
Find All Hidden Rocks On Rocky Desert!
Find All Hidden Rocks On Roof!
Find All Hidden Rocks On Aurora!
Find All Hidden Rocks On Temple!
Complete The Basic Challenges