Full list of all 50 Viva Piñata achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox 360.
Made 5 species resident
Garden size increased once
Grown 5 plants to maturity
Named a Piñata
Player has reached Level 10
Successfully completed 5 Factory requests
All the Shovel Head upgrades
Named a Helper
Made 5 variant Piñatas
Employed a Watchling
Cross romancing a Swanana and a Rashberry
Evolved 2 species
Tower of Sour has 6 pieces
Played the game for 50 hours (real time)
Become Master Romancer for 20 species
Evolved 8 species
One Piñata worth 10,000 chocolate coins
Made 50 species resident
Player has reached Level 50
Player has healed a Piñata with the Chewnicorn's power
Full bonus growth for 25 plants
Garden worth 100,000 chocolate coins
Full bonus growth for 5 plants
One Piñata worth 5,000 chocolate coins
Player has used the Mallowolf to scare off Ruffians
Employed a Gatherling
Employed a Diggerling
Player has been brought a Romance Sweet by a Macaracoon
All the Watering Can upgrades
Player has 100,000 chocolate coins
Player has hatched an egg using the Cluckles
Successfully completed 20 Factory requests
Made 20 variant Piñatas
Grown 25 plants to maturity
Player has attained full bonus growth for a plant using the Cocoadile tears
Player has made fertilizer with the Taffly
All the Shovel Handle upgrades
Employed a Weedling
Player has distracted Dastardos with the Crowla
Collected produce from a Buzzlegum, Moozipan or Goobaa
Garden worth 25,000 chocolate coins
Tower of Sour has 2 pieces
Player has distracted Dastardos with the Sherbat
Player has 25,000 chocolate coins
Garden size at maximum
Become Master Romancer for 5 species
Played the game for 10 hours (real time)
Employed a Sprinkling
Player turned the Beggar into a Trader
Made a Custom Label