3 steps to the 4 crystal crates
1. The combos.
This is the most important thing in this map. If you fail to do combos, then nobody will get a crystal crate. Vu made a video explaining how to do these.
Only 2 people should do the combos.
Guide on how to get combos(Will be uploaded on CrossFire Video Team soon):
2. The Boss.
If you did everything right, 2 people should have 550k in round 30. The other 2, who were doing combos will now shoot the Boss until they have 550k too.
3. The mutants, bonus rounds and FAL Camo.
The bonus rounds are very important since you get a high amount of points for finishing these, so make sure to not fail them. In round 24, you should use the grenade launcher of the FAL to kill the girls.
Now to the mutants and the FAL Camo. If you use the FAL camo, do not use the grenade launcher on the robots. This will cost you a lot of points since you won't get any combo bonus. You should use the grenade launcher on the mutants and the normal rifle on the robots to get combos. 2 people should kill only the mutants.
Gameplay video
*please note i did not make this all credits go to "ChickenWrap" of the Z8Games forums*