S200_53: Langkao. Any ideas?
Not Langkao specific, but my general strategy for hard maps in CW3 is as follows (and gets a good time on other maps):
First I start the game once without doing anything all. Just watching how the creeper is flowing and how much time I got on the best platform before it arrives and its defense has to to work.
On the second run, I first build a collector net, possibly a tad larger than the area I want to defend later. THen, and this is where it differes from my CW1 strategy or naive approach is to build a few reactors even before the first weapon. The amount you can build before you have to mortar differs from the map. Then I build mortars, maybe one or two PC on strategic places, but the focus is on mortars.
Once I break even counter-attacking is the usual stragegy, more energy, more weapons until it moves back. On tiny maps a TERP comes in handy to make a bit more place, so the reactor/colector grid can be made to fit as closely as possible. Once reaching a totem and having one or two energy efficeny upgrades, it becomes easy, only challenge is a good time and I often don't feel like that and just turn up speed and have time working for me now.