Here is the full list of all 52 Alchemy Classic achievements.
Create All Elements
invent: Musical instruments
create: Observatory, Astrolabe, Star chart
create: Origami
create: Dark chocolate, Milk chocolate
create: Wind Turbine, Water Turbine, Solar power plant
create: Agricultural land
create elements: 400
construct: Ornithopter, Sailplane, Airplane
construct: Automated factory
invent: Internal combustion engine
construct: Nuclear power station, Atom battery, Atomic submarine
create Borehole
construct: Potter's wheel
discover: Polluted Earth
construct: Cloud castle
create: Domestic animals
create elements: 300
invent: Scuba
invent: Wheel
construct: Incomplete mechanism
create: Mammals
invent: Sail
produce: Textile
construct: Forge
create: Alien, Robot, UFO, Freezer
discover: Sound
construct: UFO
create elements: 200
create: Reptiles
create: Flowers, Shrub, Trees, Forest
construct: Active robot
produce: Caoutchouc, Rubber
construct: Exhibit
create: Amphibians
construct: Incomplete building
create: Shrub
create elements: 100
create: Flowers
create: Fog, Rain, Snow, Thunderstorm, Wind
create elements: 50
discover: Minerals
create: Bacteria
invent: Compass
invent: Sandglass
create elements: 25
create elements: 10
complete: 100% Machines
construct: Steam turbine, Steam engine, Steam boat
create: Octopus, Dolphins, Whales
create: Dinosaurs, Flying Dinosaurs, Plesiosaurs
complete: 100% Chemical substances