I am very new to the WaRP system after having stumbled across it very shortly after it went OGL. As a test I tried converting an old module to WaRP for my players...They stomped it flat so it looks like my balancing is kind of off so I am reaching out for some help from you guys.
I have a game planned for a local convention and I again decided to use the WaRP system. The idea is that the Players will need to make it from Point A to Point B while avoiding/removing the zombie threat in their way. They start unarmed and unaware of the situation, but will quickly realize that their only way to escape is via the Helicopter on the roof.
My question is this: How best to balance the PCs and the zombies so that the game is both challenging and fun?