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Simple V1

never make a map again

The problem was there is a info_change_level entity brush needed for the nav-flow to compute the escape-route and it worked fine before I tweaked the navmesh by hand. Now it doesn't see the starting checkpoint anymore, despite neither touching it in Hammer or these navmeshes.

also try building the nav after openning all paths

nav mesh stuff is independent of hammer, so its something with l4d2

Venting: I've been trying for the past 6 hours trying to make the BS finale work and at first it did... then I fixed some unrelated navmesh problems without touching the Finale or Checkpoint navmeshes, then it broke. No matter what I do, I get the No info_change_level error now.

It worked before, but now it doesn't? I didn't touch it in the editor for literally effing months and now it is not working anymore! I'm going to try something different... after I get some energy to finish this stupid map.

yay

Now this gave me an idea for my dev-dungeon campaign.

i think it could work out better if the infected respawned like on chernobyl

Considering I started to make a GMod doom level, then turned part of it into a css map (All private), guess I really like this style. It's funny, I actually considered making the infected be respawnable and decided to instead create horde waves instead.

Without the waves you can just explore the map with little resistance, then again each map does have a different design/structure with secrets here & there.

a lot of these feel like doom and quake maps, and feel like they share the same issues those maps have when ported into l4d. They aren't bad, but l4d isn't really that well designed for idle wandering and the director seems to actively punish it but also not spawn wandering commons until you find new ground.