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