Pros:

- I can play my favourite TF2 map on L4D2 too!
- I love the fuel-powered cart idea...
- ...and the melee weapons and ammo on it!
- The beginning feels like TF2, which is good.
- Lots of fun!
- Half-Time event, YAY!

Cons:

- Too much hordes
- If you die at the end, you need to start over.
- Sometimes tanks were hard to find. It took less than a minute to find the right way for us, but someone who never played TF2 would have some problem.

Conclusion:

This is EPIC, AWESOME! But it's just NOT possible to finish it at expert. Zombies everywhere doing everything. Still, one of the best custom campaigns EVER. Good job!