Here is the full list of all 76 Mining Mechs achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Make a deal with the devil
Sell for a total value of $1337
Bounce on top of the airship
Collect 30 sapphire
Collect 100 uranium
Collect 100 diamond
Reach a depth of 1000m
Find a Hellstone
Pass the airlock
Reach a depth of 900m
Reach a depth of 800m
Collect 100 amethyst
Collect diamond ore
Pass the plated stone barrier
Reach a depth of 700m
Collect 20 emerald
Reach a depth of 600m
Collect 100 jewelry
Collect 100 gold
Unlock the crane mech
Collect uranium ore
Collect 10 ruby
Pass the outpost gate
Reach a depth of 500m
Collect 100 azurite
Collect amethyst ore
Unlock the rhino mech
Collect 100 trash
Collect gold ore
Reach a depth of 400m
Collect 10 treasures
Have $1.000.000
Unlock the kangaroo mech
Collect 100 realgar
Reach a passive income of $100
Collect azurite ore
Unlock the turtle mech
Collect a ruby gem
Reach a depth of 300m
Collect 100 cobalt
Unlock the scorpion mech
Have $100k cash
Collect an emerald gem
Sell $10k worth of ore at once
Reach a depth of 200m
Collect realgar ore
Dig 5.000 blocks
Unlock the beetle mech
Collect 100 silver
Find a treasure chest
Reach a depth of 100m
Collect cobalt ore
Use a teleporter
Collect a sapphire gem
Unlock the snake mech
Collect 100 copper
Dig 2.000 blocks
Use a booster
Collect 100 tin
Unlock the worm mech
Deliver 1000 dirt
Dig 1000 blocks
Use confetti
Get a mech to max level
Reach mech level 3
Find out how high you can fly
Connect your first mine
Use an explosive
Collect jewelry
Find cheese
Collect trash
Collect silver ore
Collect tin ore
Collect copper ore
Complete the Tutorial