Complete the following tasks to unlock Apple Game Center Achievements.

Achievement	How to unlock
Archaeologist (20 points)	Find all urns and arrowheads.
Bulldozer (20 points)	Dig 1,000 blocks of dirt.
Caller Go Ahead (20 points)	Find all phones.
Center of the Earth (30 points)	Find the center of the earth.
Coin Collector (20 points)	Find one of each coin.
Combo King (20 points)	Achieve a 20x multiplier.
Earth Mover (20 points)	Dig 2,000 blocks of dirt.
Element of Surprise (20 points)	Discover Surprisium.
Gold Miner (20 points)	Dig 100 gold ore.
Gopher Chase (10 points)	Dig 100 blocks of dirt.
Groundhog (15 points)	Dig 500 blocks of dirt.
Haz-Mat (20 points)	Retrieve 3 barrels of waste.
Heavy Metal (20 points)	Master all types of ore.
Junk Collector (20 points)	Recover all junk items.
Locksmith (20 points)	Find the key and padlock.
Meet the Team (20 points)	Find all Dev diggins.
Mushroomer (20 points)	Collect 250 mushrooms.
Paleontologist (20 points)	Dig one of each fossil.
Shipwrecker (20 points)	Find the ship anchor and wheel.
Silver Miner (20 points)	Dig 100 silver ore.
Space Invasion (20 points)	Find all alien artifacts.
Steel Worker (20 points)	Dig 100 iron ore.
Terraformer (30 points)	Dig 5,000 blocks of dirt.
The Holy Grail (20 points)	Find the Holy Grail.
Tinsmith (20 points)	Dig 100 tin ore.
Treasure Hunter (20 points)	Collect all trinkets.
X Marks the Spot (20 points)	Find a treasure chest.