Here is the full list of all 19 Hirilun achievements.
Get 3 stars in Conveyors
Get 3 stars in Factory
Get 3 stars in Pipes
Get 3 stars in Plaza
Get 3 stars in Shafts
Get 3 stars in Skyscrapers
Get 18 stars
Complete Conveyors using no skills
Complete Factory using no skills
Complete Pipes using no skills
Complete Plaza using no skills
Complete Shafts using no skills
Complete Skyscrapers using no skills
Collect all the time rings in Factory in one run
Collect all the time rings in Plaza in one run
Collect all the time rings in Skyscrapers in one run
Stay in the air for 25 seconds straight in Shafts
Take all the elevators in Skyscrapers in one run
Complete Conveyors without touching the floor