Okay, I have a dastardly plan for a trap, but I imagine this one will take a while to complete, so perhaps breaking it into steps to be worked on. I would like for this trap to occupy the vertical corridor on the far right.<br/><br/>1. There will be a thin line (6" at the most) going down the middle. This line can be jumped up and down on with no effect. To either side, the tiles will be pressure plates, designed to withstand a small bastard (kobold, goblin, halfling) running along, but anything heavier will activate them. Needs springs and mechanisms.<br/><br/>2. Mechanisms (wires, chains, more springs, cogs) will run up the wall so as to drop a heavy iron gate at each entrance to the corridor. They should weigh about 50 pounds each, so that they can be lifted, but with difficulty.<br/><br/>3. small levers will be in the grooves where the gates drop. The first one will activate a series of daggers to be thrust through the floor. This treats the area as caltrops - walking slowly (and forfeiting your Dex to AC) means you're safe, anything else causes stabbing of the feet and the movement penalty.<br/><br/>4. The other gate-lever will cause crossbows/shotguns to fire through holes in the walls. Anyone who wants their Dex to AC to not get shot will have to step on the daggers (this represents leaping aside, only to go "Huh, I forgot about those... Cleeeeriiiiiiic...")<br/><br/>---<br/><br/>As I said, I'm well aware that this is going to be a multi-step process. On the plus side, they're kobolds, who are good at making traps.<br/>I've been playing<del>Dwarf</del>Goblin Fortress lately, so my mind has become quite devious for these things.