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