Very fun map

Pros:
+ Nice idea
+ Fun and entertaining
+ The finale brings some tension

Cons:
- You can't see much during the ride
- The flashlight acts weird during the ride
- Not many details
- All levels look the same, which is an orange cavern (except the very beginning of the campaign)
- Very short! (took me 20 minutes on normal without retries)

Conclusion:
A good map for shorter sessions, although too short as for my personal standards.

Fun, but nothing special

Pros:
+ Original idea for the finale
+ Good map play time (took me 49 minutes on normal without retries)
+ Good finale
+ Various levels
+ No bugs or crashes (concerning the map itself)

Cons:
- Not many details
- The beach on the 1st lvl looks edgy
- The final place is too open, with no places to cover (even the ring's ropes don't block zombies nor survivors)
- Bots would get stuck in some places (carton boxes on 2nd or 3rd map)

Final verdict:
I've played better maps, although Undead Smackdown is a decent one.