My one go running L1 was one of the classic adventures of my youth. The party recruited pretty much all the NPC help they could and mounted a full scale frontal assault on the keep. Meanwhile, two of the PCs snuck in and entered building, catching the wizard unawares. The battle outside went well, but one of the PCs facing the wizard fired a wand of lightning bolts in a very small room. After the bolt stopped bouncing around (ah, the good ol' days!) everyone in the room was incinerated. Because of the cost for all the raise dead spells cast, I'm pretty sure the party lost money on the venture.