Hi all, I'm going to be adding to this in the coming days when I have a little more time, including screenshots, specifics, and generally prettying it up— I just wanted to publish something very quickly to help people out with some of the harder achievements in the meantime. If an achievement is not listed here yet it means it is something you will get just from progressing in the game and there is nothing special you need to do for it (I will be adding these too, in time, just wanted to prioritise the harder ones). If you notice anything incorrect, leave a comment.

Apologies for the Omnivore section not being complete, I missed a few of those in-game myself. I will update this guide with all of their locations/how to get ASAP.

Tasty
Enter your lair with a full stomach.

This one is relatively easy to achieve, especially in the first couple of nights when your kits aren't following you around. If you don't get it then for some reason though, feed your kits as much as possible during the night before returning to your den, and carry some food with you to give them before entering.

Detox Diet
Don't feed your cubs for six days in a row.

This one, again, is relatively straight-forward. The easiest way to achieve this is in the first 5 nights of the game, as there isn't a lot of trash you naturally come by anyway and the game places alternate food in your path. The other best time to go for this achievement is once you get to your second den. In the forest area in the early nights there is an abundance of animals, berries and eggs to get you by, as well as Molly.

A Friend in Need
Release the Badger from the trap.

On Night 8 the badger will get trapped and her icon will have moved on the map. If you are following the scent of your missing cub you will walk right past her, she is very hard to miss. Interact with the cage and it will set her free. You have 2 nights to free her, otherwise she will disappear (she is needed for other achievements).

Peaceful Instinct
Do not kill any animal (fish, mouse, rabbit, pigeon, chicken) for five days.

Straightforward, however the best time for this achievement is towards the end of the game. By the time you reach the Dumping Ground (3rd den), your kits should have most of their skills. This means they can get food for themselves (your kits can still hunt and it won't effect this achievement). There is also a lot of trash around that area.

A Barking Fox Doesn't Bite
Bark at the Roamer.

The Roamer is the human who appears occasionally with a guitar and sings. The first time you can interact with them is after you've reached your second den and the forest is disappearing. You will be able to hear a person singing. Go toward the sound until you find them and then bark. They will give you a berry.

Chicken Dinner
Hunt a chicken for the first time.

The first place you will likely encounter a chicken is in the Forest area after you've reached your second den. Bark at it and it will get scared and jump over its enclosure. Then simply run after it and go for the kill.

You can also get a chicken by going to the chicken factory in the Forest area. If no chickens appear at first, try barking a few times.

Lullaby
Pet a scared cub.

Safest way to unlock this one is to get attacked by an owl and defeat it. Owls sit on perches around the map and you can sneak past them to avoid waking them. This time, don't sneak and allow the owl to spot you so that it will try to attack one of your kits. Make sure that you are not injured, and that you are ready to key smash. Once the owl is gone, the kit will be scared.Hit the Pet button/key to cheer it up.

Maternity
Reunite the Badger cub with their mother

After you reach your second den, the night after the forest gets cut down you will encounter the Badger mother (assuming you previously freed her earlier in the game) and her cub at an event near the Scavenger's location. The cub will be stuck on a high ledge. To get this achievement you will have to go the long way around by sneaking past the Scavenger, reaching the badger cub and picking it up, and sneaking back to the mother. Be careful when sneaking past the Scavenger, as it will end the game if he spots you. be sure to crouch, even if it seems slow, because he will be able to hear sprinting or walking.

Omnivore
Let your cubs eat every kind of food in the game.

• There are 16 different types of food in the game, and you have to let your kits eat one of each to unlock this achievement.
  
• You must eat all of these foods in a single playthrough
  
• Make sure you eat them as soon as possible as some are time-sensitive. Everything is missable.
  
• It doesn't matter which kit will eat the food, or how many kits are alive, but some you can only get with certain skills, so try to make sure they are all alive so you don't miss anything.

For a Better Tomorrow
Learn all cub skills.

During the game your kits will be able to learn different skills to help survive. Some of these are acquired naturally as the game progresses, others you will have to encounter certain events to unlock. Objects in the game that your kits can use their skills on are indicated with a grey/white paw icon. If one of your kits has the necessary skill to interact with it, the paw will be blue. Then you can press your Skill button/key to interact. Here are all of the skills and how to acquire them:

• Squeeze Through: Unlocked on the Western entrance to CareCorp, left of the water. You can access it bu either digging under the fence to the south or the sewage pipe to the West (head left from your first den and follow the trail north. Get up on the walkway and head toward CareCorp. There will be a gap that you have to jump across, and one of your kits will fall. Climb down and take the kit to the left side where you will push them through some wooden planks.
  
• Dig: Unlocked in the sewers of CareCorp. One of your kits will fall into some sludge.
  
• Climb: Earned from getting help from Molly during game progression
  
• Hunt: Unlocked at the Scavenger's Hut (near the Dumping Ground area). Jump on the cages next to the hut and keep walking until one of your kits falls down into a cage with a rat in it.
  
• Dangle: Unlocked in the CareCorp area. On the most Eastern trail (closest to the third lair/dumping ground area), climb on the container half way through and then climb up the pipe. Whichever of your kits knows climb will follow. Then climb on the cardboard box and then keep going until you reach a pigeon sitting on a nest. The event will trigger.
• Deactivate Traps: Towards the end of the game, after you've reached the third den, there will be a trap near the den's entrance (where the Scavenger is) one night that will be triangular rather than the normal bear traps. Get caught in it, and your kit will learn the skill.

Easter Egg
Have your cubs eat the Easter Egg.

For this achievement, you will need the Dangle skill. Please see For a Better Tomorrow for details.

The Easter Egg is located at the southern part of the furthest west trail on the map. Simply use the Dangle skill to get the egg and have your kits eat it to unlock the achievement.