For anyone whose game is not working: here is the link (Make sure to copy/paste the whole link, including supernova://play)
supernova://play?swfurl=https://chat.kongregate.com/gamez/0013/3293/live/KingdomRush_v1.071_s_sl_Kongregate_nopremium.swf?kongregate_game_version=1370014721
A tip for those who needs a badge for 21 brilliant nights, or just wants to collect all Brilliants: The "Gems Return" spell (for 250 skulls) not just returns the gems to the caves, it marks them as "untouched". So, you should just complete the level on "Great", and right before the final wave finishes, cast the "Gems Return" spell.
@OrangeChus To perform a Perfect Kill, you need to kill an enemy but not overkill. For example, if the monster has 10 HP left, you need to attack him for exactly 10, to perform a Perfect Kill.
Suggestion: A save button. I know, this game autosaves, but I have found a bit annoying when you close the game, open it and got wiped a few tiles already completed.
I was playing MMR. At one point, that sounds seemed annoying. I clicked "Options" and pressed the Mute button. Nothing happened. THE MUTE BUTTON DOESN'T WORK 1/5
 "Trifling Truffle Trouble"){kind=icon}
 "Kingdom Rush"){kind=icon}
 "Beam"){kind=icon}
 "Chibi Knight"){kind=icon}
 "Cursed Treasure 2 Remastered"){kind=icon}
 "Cursed Treasure 2"){kind=icon}
 "Apocashop"){kind=icon}
 "Rogue Fable III"){kind=icon}
 "Chuck the Sheep"){kind=icon}
 "Castle Woodwarf"){kind=icon}
 "Poker Quest RPG"){kind=icon}
 "Game in Ten Seconds"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
Calssic :-D My beginner gamedev mistakes.