I don't think its all that bad... I don't play this game alot, I just play till my energy runs out. If I level up I play for longer. If not, I leave it till tomorrow when people have fought me and my energy and skills are full. Not really annoying... I just think of it as a side game.
Career is easy. The only hard challenge is #4. Hard to control shield so it doesn't block the sword, buts stays far enough and close enough so that it takes the damage instead if the sword. Still possible, just tricky. All the other challenges are simple. I'd give this a 9/10.
Did you know? The highest up the leaderboard has less of a life than you have, considering he/she takes the time to hack a game that you don't really play, and stands out to let people know that they have no life.
Did you know? There are midget ninja's called "minjas". They can throw a ninja star, and JUMP onto that ninja star. That star hits you in the neck, he punches you in the face.
Did you know? Some people are morons because the think this is a normal game. THIS IS AN IDLE GAME PEOPLE. THEREFORE, IT IS BEST TO PLAY ANOTHER GAME WHILE THIS GAME IDLES. I'VE BEEN DOING THIS SINCE THE GAME CAME OUT.
 "Dream World"){kind=icon}
 "A Knight's Story 2"){kind=icon}
 "Bot Arena 3"){kind=icon}