Strategy:
You have an uncompleted camp (the point 1) in a valley. Build up the complete camp and ensure its defence - two Distance Seeders in the entrance are sufficient. Send a Grim Reaper to the point 2 by air. This Reaper can destroy two Bazooka Batteries (triangles on the map) in the plateau 3. Then send this Reaper to the point 4 (near the cactus) by air again and destroy two AA batteries there. In the next step, send the Doom Dome to the point 5 by air. This Dome can destroy four AA batteries by fire from the plateau 6. Then send the Reaper to the point 7 (closest to the river) and destroy remaining AA batteries. Now, it is time for your Fighters - they can destroy all Touches of Death (rhombuses on the map). Be careful on Homing Bazookoids - when they fire on your Fighters, attract them into the range of your weapons. Meanwhile, destroy enemy camp and all other means.

Notes:
1. This strategy requires very careful landing manoeuvring.
2. The part time is 0:50 and my record is 0:45.