Badges...
	Wallpaper...

Perform the following actions to unlock Badges.

Badge	How to unlock
Bag lady	Collect a bag.
Balancing act	Balance 200 meters.
Body count	Defeat an enemy 100 times.
Death from above	Drop from a zipline and kick an enemy.
Economist	Defeat 2 enemies with 1 attack.
Falling down	Make an enemy fall.
Fly on the wall	Wall run 500 meters.
Free falling	Fall 1,000 meters.
Gravel rash	Slide 500 meters.
Hoarder	Collect 20 bags.
I heart 88.7	Find the pirate radio frequency graffiti.
I'll take that	Disarm an enemy.
Marathon runner	Run 10,000 meters.
Mountaineer	Climb 1,000 meters.
Neutralizer	Disarm 20 enemies.
On the clock	Earn one star in speed run mode.
Packrat	Collect all bags.
Rampage	Defeat 10 enemies in 60 seconds.
Scream for me	Make 10 enemies fall.
Scruffy	Find the 'scruffy' graffiti.
Still counting	Earn 20 stars in speed run mode.
Superstar	Earn all stars in speed run mode.
Tag, you're it	Defeat a runner.
Tango down	Defeat an enemy.
That's a wrap	Complete the game.
Thrill of the chase	Defeat 10 runners.
Vrooom!	Maintain sprint speed for 10 seconds.
Zip-a-Dee-Doo-Dah	Zipline 1,000 meters.

Get all 28 badges to unlock all of the Wallpaper options.