How do you unlock target smash level 5?

[CaliburChamp]

I wanted to get the final unlockable CD. (The rest are found by chance.) But it says in challenges mode, that I need to unlock target smash level 5 and play one round of it. I used a few characters to beat Target smash level 1-4, but target smash 5 did not unlock. Any answers will be appreciated.

 

[Cooper736]

You need to reach it by playing through Classic mode on Very Hard or Intense, until you reach it. I suggest Intense, because Target Smash 5 will appear after the fourth match. You don't need to beat it, you just need to play until you finish or die. Then you can quit and it will be unlocked in Stadium.