Here is the full list of all 27 Simmiland achievements.
build modern homes and cars
create enough metal/glass/oil drums/batteries for an industrial revolution
humankind beat you and crossed the spacetime dimension
found all non edible resources
humankind beat the plague
humans surviving in sub-zero temperatures
50% of eaten food was processed
mankind flew to space
get an IQ over 200
build the sky tower
a type of divine intervention
have mankind build villages on 3 different islands
create an oil reservoir
found all types of food
have mankind learn about conductive electricity the hard way
have mankind create a smelting furnace near lava
create the town center
create a volcano
you shouldn't eat that...
have an oven and a cooking pot
have farms, an animal pen and a farmhouse
have mankind create a church
get 10+ population
inspect a swamp herb to have mankind realize medication
create a civilization of at least 6+ pop with an IQ lower than 70
build a log cabin in the woods
create a berry bush