Stories of the Undead Inferno Expansion - Released!

[mqstout]

I'd go for simplicity and make the rules comparable to the Sewers from Survival of the Fittest. There's a "warp space" -- the stairwell -- you go to, and, for one movement point, you "teleport" to the other space that's upstairs/downstairs. No chances. If you want it to take time, have a stairwell space (side board even, a la sewers) to indicate "in the stairwell". It'd also allow for tactical movement -- the zombie or heroes might defend the stairs. Just make sure that here's indication of which walls can't be busted through, depending on how the boards are done.