Difficulty allows for many strategies to come into play and requires high levels of teamwork.
Build times for barriers and other elements are reasonably balanced.
Not too many special infected to get in your way.
Two layered difficulty (Main game difficulty and the lobby within the map) for the playstyle you would like.
Cons:
Bots' pathfinding could be enhanced a little. They like to stay outside of the helicopter even when you're inside.
Oh jeez a tank... oh no not 2. Wait a minute 3? 4? 5? 6? 7? 0_0 Yeah for some reason when I play this map I sometimes get a ridiculous amount of Tanks coming and smash up my team. Not sure if it's the server I was on or the map though.
Conclusion:
Despite the ridiculous but rare tank raid and the bots this map is solid. The concept is rather fresh and demands teamwork which is rarely seen ins some custom maps. Special infected don't come too often which is good. They usually only come at the start of the round and then every now and then in between. The difficulty room was also a nice touch to fine tune gameplay. Overall a great map, good job!
Pros:
Cons:
Conclusion: