You get a new party member whenever you kill a spawning pool. Kill all spawning pools and you win the level.

This is a 50% success, 50% failure, because I really wanted to do more, but ended up being too bogged down in coding the unity-mechanics of a roguelike and not enough time on my specific-game mechanics or UI.

https://drive.google.com/file/d/0B0Tj7gBblTldb3JKbXdxcGlVUjA/edit?usp=sharing