Lots of rambling during pause screens, hopefully it's okay.
2nd lakebed summary:
- 2 choppers, 2 AA-wraiths + 1 brute and 3 grunts initially.
- Wave 1 starts as you enter the lakebed.
- Wave 2 starts if (at least) 1 chopper and 1 AA-wraith is destroyed and wave 1 phantoms have been destroyed or left the map.
- Fight ends if all choppers, ghosts and wraiths are destroyed, and wave 2 phantoms have been destroyed or left the map.
![](https://i.ytimg.com/vi/SO_zCBB5Mrw/maxresdefault.jpg)