Here is the full list of all 11 Blockara achievements.
Defeat White, the Guardian of the Dragon, in Story Mode.
Defeat the September Dragon in Story Mode.
Defeat the mysterious Master Alchemist in Story Mode
Beat Story Mode with all 10 characters.
Defeat the September Dragon in Story Mode with all 10 characters.
Complete Story Mode on a difficulty of 5 or higher.
Complete Story Mode on the highest difficulty.
Defeat the Master Alchemist in Story Mode on a difficulty of 5 or higher.
Complete all 32 puzzles in Puzzle Mode.
Last over 15 minutes in Endless Mode.
Complete Story Mode as the Master Alchemist... somehow.