Update: Though the newest DLC the Cretaceous Predator Pack does not help much, I managed to complete the last of the "kill two birds with one stone". By completing the official Southwest USA challenge in Jurassic difficulty, I both unlocked the cosmetic genes and gotten the achievement.
The official Southwest USA challenge is sure the toughest of the tough.
Here is a tip to new players: you might have to switch teams so that profitability will not be jeopardized. First, have the research team consisting of 2 x cheaper research, 1 faster research, and logistics specialist. The genetic specialist can assist in research, DNA extraction, and synthesis. During the research process, bring all the dinosaurs wondering the wilds in the map into exhibits. The genome team consist of 2 x cheaper expeditions, 1 faster expedition, and 1 faster extraction.
Honestly, I prefer automated hatcheries in maintain the dinosaur population than keeping the team consisting of 2 x cheaper synthesis and 2 x cheaper incubation.
When it comes to the following likes relationships:
- Majungasaurus and Carnotaurus
- Suchomimus and Baryonyx
Be sure to filter out the individuals with the aggressive trait during the incubation process to prevent fights from breaking out between two species.