Unlock the following Versus stages by performing the corresponding tasks in Mission mode:

STAGE - HOW TO UNLOCK
Unknown - Defeat a zone's Boss (stage 10).
Unknown - Earn an "A" rank in an entire zone.
Free Roam - Plant 7,000 bombs.
Four Leaf - Destroy 4,000 soft blocks.
Magnet EX - Get 700 packs.
Quicksand EX - Complete 300 missions.
Ice Rink EX - Get 30,000 experience points.
Unknown - Get a Total Best Score of over 2,500,000 points.
Unknown - Get a Total Best Time of under 100 seconds.
Flash EX - Defeat over 7,000 enemies.