Left 4 Dead 2: Source of Infection 1.0

This campaign has lots of secrets and tricks..not an easy walk though campaign at all but if you take your time you'll be just fine so... relax, have fun,
Features:
- Nice level design.
- Acceptable difficulty.
- Custom textures and skins.
- Glass stairs and the gallery were amazing.
- Finale was great too.
- Good spread of supplies.
- Fine horde and tank events.
Acceptable map length.
Very good AI navigation.
Third map had surprises awaiting us: witches.