The camp is good overall. Cool story, nice environments, stunting events, and interesting ideas. However.
(1) Several areas feel empty. Some areas of the map are heavily detailed, but if you keep walking, you find clear areas that look unfinished. Remember this is a zombie apocalypse, all areas should look messy, trashy and deteriorated.
(2) The train map is awesome. But has most of the problems I mentioned in (1).
(3) Many areas abuse of invisible walls that make no sense.
(4) The finale feels anticlimactic considering the level of complexity of earlier panic events. Since finale is wide open. I think it would be fair to spawn two tanks in the middle and end of last panic event. Also, make some holes in the back of the house so the players are obliged to barricade to prevent zombies from cornering the survivors in the back or second floor of the house. Also, I will put something extra at the end before the rescue like filling a generator with 5 gas cans to make the survivors defend outside the house. I passed the finale in expert realism very easily just by defending inside back of the house, which feels anticlimactic.