Here is the full list of all 28 The Smurfs - there are Mission Vileaf achievements.
Get across the Laboratory without getting caught by Gargamel
SmurfoGlide for 10 seconds
Find every vial
Complete the 100% of the game
Build all of the upgrades
Find all of the mushrooms
Find every piece of bark
Find and wake up Lazy 3 times
Find all of Jokey’s presents
Perform 10 perfect jumps in a row
Find all of the mandrakes
Make Papa Smurf cough
Complete the adventure in Easy mode
Complete the adventure in Normal mode
Complete the adventure in Hard mode
Complete the Chapter: Gargamel
SmurfoSprint for 100 meters
Perform a SmurfoSprint, Jump and SmurfoSplat combo!
Make 10 flowers of every color grow by using the Smufizer
Heal the entire village
Complete the Chapter: The Swamp
Complete the Chapter: The Castle
Jump on 3 Vilecritters' heads in a row
Destroy 100 crates of Sarsaparilla
Build your first upgrade
Complete the Chapter: The Forest
Complete the Chapter: The Village
Find the flower for the Smurfizer