Those levels with ninja bosses cannot be completed on brilliant. Even if you hit him as soon as he enters the map, he is so fast that he reaches the gems in invisible mode, and you just cant do anything to stop him. 5 full powered meteor cant kill him. Maybe there is a small chance, if you can freeze him when he enters the map, and keep him frozen until he dies... but how much is the possibility of it? :)
 "Crypture"){kind=icon}
 "Cursed Treasure: Don't Touch My Gems!"){kind=icon}
 "Slice: Fortress Defence"){kind=icon}
 "Sokoban Experts"){kind=icon}