Harvest Loot Regularly...
	The Anvil is Key...
	Various Achievements...

You can harvest loot every day, from nodes that indicate areas you have cleared. Make sure that you do so regularly in order to keep up your momentum, and make sure also that you complete the golden pig mission daily. Make it the first thing you do, since that allows you to save up precious gold coins and invest in the anvil and other great goodies.

You can spend your gold on all sorts of different things in the game, but most of them have limited value and then you're left without gold. The best option is to save up for the anvil, as it allows you to craft improved gear for your characters. That's a benefit that doesn't go away, so it automatically wins out over temporary improvements. The anvil is quite expensive, but keep in mind that while you save, you can also watch out for special promotions. In some cases, there will be sales that allow you to purchase the anvil for as little as half its typical cost. When you see a discount that works for you, make the purchase. Then you can start thinking about other uses for your gold, once the anvil is in your possession.

Achievement	How to unlock
Creepy Castle (10 points)	Complete the Star Reef Castle and retrieve the 3rd egg.
Desert Raider (10 points)	Complete the Desert Castle and retrieve the 2nd egg.
Dive like a Fish (10 points)	Obtain the submarine and explore the deep seas.
egg_05 (20 points)	Complete the Pig City Castle and retrieve the 5th egg.
Elite Class (10 points)	Upgrade your first hero class to ELITE status at Mighty Eagle's Training Dojo.
First Steps (10 points)	Complete the Cobalt Plateau Castle and retrieve the 1st egg.
Fly like a Bird (10 points)	Obtain the airship and take to the skies.
Magic Keys (10 points)	Obtain the Blue Pig Key.
Master Class (10 points)	Upgrade your first hero class to MASTER status at Mighty Eagle's Training Dojo.
Meet Bomb (10 points)	Help Black Bird repair his ship.
Meet Chuck (10 points)	Free Yellow Bird from imprisonment.
Meet Jay, Jake & Jim (10 points)	Rescue the Blue Birds from Porky's armada.
Meet Matilda (10 points)	Save White Bird, a damsel in distress.
One Key to Rule them All (10 points)	Obtain the legendary Red Pig Key.
Royal Keys (10 points)	Obtain the Yellow Pig Key.
Summiteer (10 points)	Complete the Snowy Peak Castle and retrieve the 4th egg.
The Deepest Dungeon (10 points)	Find and enter the super secret, the legendary, the elusive... CHRONICLE CAVE!
The Journey Begins (10 points)	Obtain the ship to conquer new frontiers.
Veteran Class (10 points)	Upgrade your first hero class to VETERAN status at Mighty Eagle's Training Dojo.