Easy "Cheers" achievement...
	Various Game Center Achievemen...

Kill 21 monsters in one run.

Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
Aerial Stomp (20 points)	Stomp on a monster midair.
Arnie (10 points)	Kill a total of 50 monsters in a Ride by Shooting.
Cheers (20 points)	Earn the "Drinking Monsters" award.
Demon Trapper (30 points)	Kill a total of 300 Demons.
Fun Run (10 points)	Run a total of 10km.
Half Marathon (20 points)	Run a total of 21km.
Hoplophobia (40 points)	Run 1km without firing a shot.
Line em up (40 points)	Shoot 4 monsters in 1 shot with The Pacifier.
Marathon (40 points)	Run a total of 42km.
Mario (40 points)	Jump on 2 heads in a row without touching the ground.
Monster Exterminator (60 points)	Kill a total of 2000 monsters.
Monster Hunter (20 points)	Kill a total of 100 monsters.
Monster Lover (40 points)	Run 2km without harming a single monster.
Monster Run (50 points)	Run 5km in a single run.
Monster Rush (20 points)	Run 2km in a single run.
Monster Sprint (10 points)	Run 1km in a single run.
Mummy Stalker (20 points)	Kill a total of 100 Mummies.
Persistent (10 points)	Die 100 times.
Pin Number (40 points)	Get a distance that ends three consecutive numbers.
Strikes Twice (20 points)	Collect Mr Zappy twice in a row in one run.
Swish (20 points)	Jump down the first hole without hitting the sides.
They're Everywhere (10 points)	Kill 20 monsters on the Main Menu.
Trigger Happy (20 points)	Fire your weapon over 10,000 times.
Ultra Marathon (50 points)	Run a total of 100km.
Vampire Slayer (30 points)	Kill a total of 200 Vampires.
Zombie Stomper (40 points)	Kill a total of 400 Zombies.