PLAY ON ANY DIFFICULTY BUT PEACEFUL AND EASY
Extend the starting island
Find the hidden chests
Make a cobblestone generator
Make a house
Make a mob trap
achieve the achievement "Acquiring Hardware!"
Make an infinite water source
Make a nether portal
Find the other island
Kill every type of mob in the Nether and in the regular world
Make a farm
make 10 signs
make iron equipment
go down to the regular ground. make an escape base/fallout shelter there.
Find the diamond.
Make a diamond pickaxe.
Use saplings to make a tree farm.
craft a bow
make an archer/sniper tower