OK, I'm sort of new to this, so feel free to edit, because I want to get as good as I can at this, as fast as I can.
Well, you will be needing the following:
10-15 bone pillars
6 chryssoras (jelly fish poisonous things)
6 bone walls
6 sparks (to give fuel to the bone wall)
a few water pillars and ice bolts (in case of those annoying otyughs)
and an arsenic (hard to get, so it's not mandatory, but it is a great add, even better with an animate weapon)
Strategy (without options):
play your bone pillars and jelly fish things pronto, then bone wall (if your more defensive, you might play bone walls sooner, your choice), and stack the poison; its pretty straight forward. If you add the listed options or different things I didn't list, kudos to you and good luck making your own ownage strategy.