Jurassic World Evolution 2

To get this achievement you need to uncover everything in the Database.
Include: 79 Dinosaur Genomes, 28 Genetic Mods, 78 Dig Sites, 37 Misc Finds, 95 Buildings, 16 Buildings Upgrades, 14 Fences and Paths, 20 Scenery, 54 Characters, 11 Locations, 16 Diseases, 18 Injuries and Palaeobotany. I unlocked Most of them after complete the Campaign, the Chaos Theory and the Challenges, left only some Diseases and Injuries.
There are some Diseases and Injuries I think will be difficult to unlock.
Diseases:
Coccidioidomycosis, description says it's a fungus found in sand and soil, by playing Challenge 5 Southwest USA, after a sandstorm it will be unlocked.
E. Coli & Salmonella, meat feeders and shark feeders can get these two diseases randomly, release some Procompsognathus, give them meat feeders and wait for infection.
Foot and Mouth, lack of open space cause this, put Mosasaurus in a small pool will get it.
Injuries:
Frostbite & Hypothermia, after a blizzard will get these, can be unlocked by playing Challenge 1 Canada. If your dinos only get Hypothermia, do not threat them and they might turn into Frostbite
In-grown Claw, dino must get Broken Claw first by fighting, do not treat it and leave it alone, it will turn into In-grown Claw soon.
Swallowed Object & Swallowed Phone, let a large carnivore eat guests will got these.

Don't let the high ratio fool you - this is not as bad as it seems!

As completing chaos theory mode is required for this and you will unlock most of the database entries in the process I strongly recommend completing that mode first. Any entries you are missing afterwards can be unlocked in the sandbox mode with the following settings (unless stated otherwise):

Sandbox mode: Custom
Weather: No weather
Time of day: Any
Day/night cycle: Any
Terrain: Flattened

No egg failures: On
Dinosaur disease level: No disease
Dinosaurs don't starve: All dinosaurs
Dinosaurs don't dehydrate: All dinosaurs
Dinosaur lifespan: Unlimited

Dinosaur escapes: No escapes
Dinosaur comfort: Off
Dinosaur combat frequency: None
Herbivores initiate fight: Off
Vehicle aggression: Off

Unlimited power: On
Infinite fuel: On
Invincible vehicles: On
Sabotage risk: Off

Cash: Unlimited
Appeal difficulty: Easy
Guest count target: Easy
Income target: Easy

Contracts: Off
Narrative events: Off

Scientists: Off
Scientist unrest: Off
Research: Off
Task time: 10%


Dinosaurs(Genomes/Mods)+ Injuries

Create a large enclosure with a hatchery attached and apply the extra hatching bay upgrade. As all dinosaurs are unlocked start synthesizing any that you are missing entries for and release them immediately. You can change the sandbox settings to:

Dinosaur combat frequency: Normal

and release a lot of carnivores to initiate fights. Leave any injured dinosaurs untreated and you will unlock almost all injuries. The last few injuries have specific requirements:

Hypothermia -
Play on the Canada map and set the storm frequency to high in sandbox settings. After a storm there is a good chance a dinosaur will get hypothermia.

Frostbite -
Rescue the diplodocus in the Pennsylvania level of the Campaign and they will immediately have frostbite.

Swallowed Object -
Let a carnivore loose on the guests and eventually one will get this.

Swallowed Phone -
The Spinosaurus in the Isla Sorna Site B chaos theory level has this.

Second Degree Burn -
I am unsure as to where I unlocked this but I think it is unlocked in the Campaign.


For the flying/aquatic dinosaurs repeat the process with an aviary and a lagoon to complete the dinosaur genome database entries whilst also unlocking:




For the genetic mods construct science centre and change the sandbox settings to:

Research: On

You can then simply research the genetic mods one by one until all are unlocked. Some will require a certain number of dinosaur fights before they can be researched, but this have should already been reached using the steps above.


Palaeontology

Firstly, attach a few viewing galleries to your enclosure, aviary and lagoon. With all the dinosaurs you've released your appeal should already be high, but if not release a few high value dinosaurs (e.g. Indominus Rex or Mosasarus). Construct some large amenities and a large hotel and open your park. You should quickly reach a park rating of over 4 stars.

From there, ensure that research is turned on in sandbox settings and start researching all of the dinosaurs, unlocking new dig sites in the process. Note that you do not need to send an expedition to the newly unlocked dig sites to unlock the database entry - researching is all that's needed.

For the misc items check the database and see which ones you need. It will tell you what dig site has the entry you are missing so simply send an expedition there to unlock it.


Buildings

Start researching any buildings/upgrades/paths you are missing entries for. Note that some buildings require certain conditions to be met before they can be researched, such as building another building prior or reaching a certain park rating, which you should have already achieved.


Jurassic Universe

These will all be unlocked after completing the five levels of chaos theory mode.


Diseases

These are a pain. Some of these are random so there is an element of RNG to this. Change the sandbox settings to:

Weather level: Frequent storms
Dinosaur combat frequency: Off
Dinosaur disease level: High
Dinosaur comfort: On

As the dinosaur comfort will be low for all the dinosaurs you start unlocking a few diseases such as:

Algae Poisoning
Avian pox
Common cold
Tubercolosis

as well as most of the others. But again, there is an element of luck with catching these.

If your lagoon is small you should eventually unlock these from your aquatic dinosaurs:

Chronic stress
Foot and Mouth

Some diseases require you to take a photo of an infected dinosaur before you can research the treatment and unlock the database entry.

A few of the diseases are map specific as they are triggered by weather:

Coccidioidomycosis + Silicosis -
I got these playing the San Diego chaos theory level but in sandbox mode. A dinosaur can catch coccidioidomycosis after a sand storm and silicosis can be caught at any time.

The following diseases are caught from infected feeders:

Hookworms + salmonella + E. Coli -
For these start an empty sandbox mode and place down many (100+) carnivore feeders and construct a response facility. Eventually one of the feeders will become infected. Send a ranger outpost to decontaminate it will be one of these three diseases. You can then research the treatment to unlock the entry. I'm not sure if it was just a coincidence but I was only getting E. Coli when playing on the San Diego map and when I changed to California I unlocked hookworms on my first infected feeder. I am not sure which map I unlocked salmonella on.


Palaebotany

The easiest section of them all. Simply go on the environment tab and place down each of the different types of nature/feeder to unlock all the entries.

This is just a short tip for the 3 hard ailments to get:
Hookworms, E. Coli and Salmonella

BEFORE YOU START HERES WHAT YOU NEED ~
Sandbox Mode
Scientists ON
Research ON
Fossils and Excavations OFF
Diseases HIGH
Dinosaurs (at least carnivores) CAN starve

Hookworms:
Make a big (up to you just how big) lagoon enclosure and release 3-4 mosasaurus’ into your pool and place as many feeders as they need. The reason for the mosies for this is I’ve found that the shark feeders get hookworms easiest (I may not be right, but heyho, 20 hours doesn’t lie)

Salmonella:
Same as above, or use regular feeders. I had salmonella appear on base game at least 4 times and seems to be the most common to get. If you’re having trouble, try piscibore feeders for a baryonyx.

E. Coli:
This one took me 10+ hours of sitting and waiting. In the meantime, I got salmonella 6 times and Hookworms 34 times. Yes I counted.
Play on the San Diego map. That’s it. That’s all you need.
For extra tips:
Make an enclosure and place as many proceratosaurus’ as physically possible. I ended up with 40-45. Then meet their needs and give them as many feeders as they need AND NO MORE. Then set your storms to frequent (it seemed to help) and place literally 100s of feeders outside the enclosure. This way, when they feed, there’s a chance of infection and when a sandstorm rolls through there’s a much higher chance of the disease spawning.

THEN all you have to do is disinfect the feeder and research the medicine and boom you’ve got e. Coli