Here is the full list of all 26 Pound of Ground achievements.
Finish the Game on Hard Difficulty. Don't be a wimp!
Throw 26 dead zombies under water.
Fight your way through the first underground while using only the baseball bat.
Kill 5 hyenas with a dynamite.
Blow up the first generator on the farm without killing ANY zombies on the way.
Kill 68 zombies using any weapons without curing yourself.
Kill 4 zombies with a single crossbow shot.
Kill 15 zombies within 25 seconds using your firearms only.
Kill at least 10 zombies by shooting the explosive barrel.
Perform car jumps with total distance of 3.14159265 km.
Tune up your car to the max.
Perform a car jump over more than 172m.
Make a zombie fly over 33m with your baseball bat.
With a handgun kill 6 zombies without reloading.
Make the zombies fly over the total of 1212m with your baseball bat.
Hit the speedometer limit.
Kill 911 zombies with your weapons or your car.
Kill 66 stunned zombies with your baseball bat.
Find the Indian drug dealer.
Collect 1111 coins.
Exterminate the Mafia family.
Clear the Airport location and save all the hotties!
Run 192 zombies over with your car.
Find the guitar case.
Reach the game's end within 5 minutes. Yes, MINUTES!
Locate your red car.