Nice level! Beat it on the first try, but lost a trooper and was also lucky not to lose a couple of hostages. Video replay posted here (obvious spoilers to those who haven't played it yet).

Thanks guys. I used your hint in my upcomming map. Looks indeed much better.

Nice work using the mission creator.
Check this post out though as you are not placing the walls correctly
http://psteamcommunity.yuanyoumao.com/app/248610/discussions/0/616187204175344659/

Great map. It asked for a good amount of coordination between members.