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