Here is the full list of all 53 Boulder Dash - there are 30th Anniversary achievements.
Complete Intro Caves
Complete Boulder Mountain Caves
Complete Jade Garden Caves
Complete Big Stone Dragon Caves
Complete Mine All Mine Caves
Complete Oni I'm Home Caves
Complete Bit Box Caves
Complete Classic Remix Caves
Complete Critter Creek Caves
Complete Halloween Caves
Complete Boo Caves
Complete Shades Of Gray Caves
Complete Bouldering Comp Caves
Unlock Crystal
Unlock Onyx
Unlock Agate
Unlock Classic Rockford
Unlock Jet
Unlock Jade
Unlock Quartz
Unlock Bitford
Create and Play One Level in the Level Editor
Upload a level you've created to Steam Workshop
Download and play 5 community created levels from Steam Workshop
Open 10 Treasure Chests
Make a level with more than 20 boulders in it
Give ratings to 5 Steam Workshop caves
Use the Dynamite Power-up 20 times
Use the SpyGlass Power-up 20 times
Use the Freeze Power-up 20 times
Collect 50 gems with the 2x power-up engaged
Use the 2x Power-up 20 times
Crush 50 creatures under falling boulders
Complete all Intro caves with a 3-star Rating
Complete all Boulder Mountain caves with a 3-star Rating
Complete all Japanese Garden caves with a 3-star Rating
Complete all Big Stone Dragon Caves with a 3-star Rating
Complete all Mine All Mine caves with a 3-star Rating
Complete all Oni Demons caves with a 3-star Rating
Complete all Bit Box caves with a 3-star Rating
Complete all Classic Remix caves with a 3-star Rating
Complete all Critter Creek caves with a 3-star Rating
Complete all Halloween caves with a 3-star Rating
Complete all Boo caves with a 3-star Rating
Complete all Shades of Gray caves with a 3-star Rating
Complete all Bouldering Comp caves with a 3-star Rating
Convert 50 Boulders to Gems using Magic Walls
Collect 1000 gems
Crush a creature with a rock falling more than 8 spaces
Clear all the dirt tiles in a level
Get crushed by a falling boulder
Get crushed by a falling gem in Hardcore mode
Trap an Amoeba forcing it to turn into gems