Here is the full list of all 22 Enchanted Portals achievements.
Complete the forest level.
Complete the hotel level.
Defeat Meowitch.
Complete the UFO level.
Complete the matrix level.
Defeat the cow.
Complete the jungle level.
Complete the temple level.
Complete the beach level.
Complete the laboratory level.
Complete the cave level.
Defeat the princess.
Complete the desert level.
Complete the city level.
Defeat Rocky.
Defeat the final boss.
Defeat Meowitch in insane mode!
Defeat the cow in insane mode!
Complete the beach level in insane mode!
Defeat the princess in insane mode!
Defeat Rocky in insane mode!
Defeat the final boss in insane mode!