"Well, since the water limits us quite a bit, we could try shooting a few bolts at them down there, and hope to lure them onto the stairs or out the door where we could surround them, or throw in a chink of meat and hope they go into some kind of feeding frenzy and are distracted, so we can take pot-shots. Barring that we may just have to wade in, shields in front...unless anyone knows a more magical method of giving us an advantage?"