Here is the full list of all 50 Shovel Knight Dig achievements.
Have 20000 gems on hand.
Hit Master Argus with a surprise attack.
Defeat an enemy using 5 different relics.
Defeat a boss with a level 5 Morph Lance.
Defeat 3 enemies using the Rising Dagger without hitting the ground
Use the Gusteo Wand to push an enemy into a hazard.
Run over 5 enemies using the Mobile Gear Drill in one go.
Retrieve a money bag using the Reverse Exa.
Deflect a Throwing Trowel to defeat 3 enemies.
Don't collect any gems in one stage.
Defeat 5 foes at once using the War Horn.
Purchase or unlock all relics, armors, and accessories.
Use a glass key acquired from a previous world in a new world.
Defeat 2 enemies with one cast of the Shadow Locket.
Absorb 3 hits using the Bubble Frog.
Post a score on the Leaderboard.
Earn every Shovel Blade technique from Master Argus.
Defeat Hive Knight without hitting Fleck.
Descend 50 blocks in a Coffer of Safekeeping.
Beat the game without using any relics.
Finish a level and swing the Shovel Blade fewer than 3 times, including digging.
Finish the game having seen every world in one run.
Disable the Omega Saw.
Have two different follow pets at one time!
Freeze Dozedrake with the Blizzeo Wand.
Clean off a Mud-Encrusted Relic without using it.
Finish the game.
Finish the game without spending any gems.
Emerge unscathed from a battle with any Hexcavator.
Help Altius in three locations in the Mushroom Mines.
Defeat an enemy with the Flameo Wand from more than 8 blocks away.
Finish off Spore Knight with her own hat.
Acquire a new set of armor.
Finish a world without eating any food.
Spend a combined total of 20000 gems in the shops at the surface.
Defeat 12 enemies in a row using the Shovel Drop without touching the ground.
Finish any stage without taking damage.
Choose 5 risky paths at the bottom of the well.
Discover 20 secret rooms along the well's sides.
Hatch 5 creatures from eggs.
Electrocute 3 enemies at once.
Wield 5 relics
Open the Drill Capsule 10 times.
Defeat an enemy as Tiny Shovel Knight.
Find all the secrets in one world.
Collect all 9 cogs in a world.
Dig through the Mushroom Mines.
Complete the tutorial
Buy your first item.
Beat the game within 25 minutes.