The Legends of the Lawn Title update for Plants vs. Zombies Garden Warfare has 10 achievements worth 250 gamerscore.
Summon a Backup Dancer, Vampire Zombie and Heal Zombie
Collect 7 Diamonds from the Treasure Yeti
Vanquish 50 Vampire Zombies
Defeat a Vampire Super Wave
Vanquish a Treasure Yeti in Garden Ops
Capture 20 Gardens in Suburbination
Grow a Laser Bean
Vanquish a Zombie carrying a Nacho Taco in Taco Bandits
Collect 50 Crazy Orbs in Vanquish Confirmed
Vanquish Baron von Bats in Garden Ops