Pros:

Map 3 and 4 are beautiful
complicated map layout
very large map
a lot of efforts to finish this huge map
fun to see my friend got charged into the sea :)

Cons:

too repetitive in map 1 and map 2
texture bugs
blockade models are unsuitable
lack of particle effects

Conclusion:

Nice Map !!!
Keep it up !!!
you can add some particle effects,
Improve the escape scene and
improve map 1 and 2.