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