How do you unlock characters in Super Smash Flash?

Luigi -- Clear Adventure on at least normal with Mario

Jigglypuff -- Clear Adventure on any difficulty with any character.

Cloud -- Complete 100-man melee with any character.

Crono -- Clear 3-minute Melee.

Naruto -- Clear Adventure with the original 13 characters.

Shadow -- Clear Adventure with Sonic, Tails, and Knuckles

Super Sonic -- Clear Classic with Sonic on Very Hard Difficulty without getting Game Over.

Zero -- Clear Adventure with Megaman getting Game Over on at least Normal Difficulty.

Young Link -- Clear Classic with Link on any difficulty.

Inuyasha -- Clear Adventure without losing any lives.

Mr. Game and Watch -- Clear Target Test with every character but him.

Mr. Incredible -- Clear Classic Mode with the original 13 characters.

Mewtwo -- Clear Adventure with Pikachu and Jigglypuff.

Lloyd -- Clear Adventure with any character after having one hour of total play time.

Blue -- Clear Adventure with Blade on at least