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