Non-canonical
Shoot the secondary target with the cannon.
While aiming the whale monster in the sea with the cannon, use another missile to aim back at the bunker where you turned the cannon moments before and fire a second missile back into the control room window you had looked out of to see the cannon.
Secret bunker
Enter the secret code.
When you enter the code to activate the cannon during chapter six, Nobody Left Behind, you can also enter the following code and pull the lever to enter it, which also reveals one of the 20 hidden posters.
Creature Comforts
Comfort the scared pig.
When you find your friend with the bucket on his head in Chapter Four, No Shelter, at the end of the bell tower, you will see a pig running by. Follow it to find the right path, but stop by and interact with it to give it some comfort while it's so scared.
Save our skins
Escape Sniffer.
Prevent Sniffer from entering the ice cream truck at the end of Chapter Two.
Happy days
Reunite with your friends.
After you finish fighting the mother in chapter six, find your friends and trigger this achievement.
Tarred and feathered
Save your friend from the birds.
Successfully escape from the seagull in the third chapter and recruit a second friend to the party.
Everything is good
Finish the main story.
This achievement is automatically triggered when you roll points on Reanimal.
Destruction Derby
Destroy 24 cars from the comfort of your own vehicle.
As you drive the tank through the streets, destroy a total of 24 cars in your path. You must choose to destroy enough of them to achieve this trophy.
Survival instinct
Fail to save your friend from being killed.
As you progress through the early stages of Chapter Four, No Shelter, you'll smash through a wall of petrified children before being confronted by a trio of hostile baby spiders. They will attack both orphans and your friend, so focus their attention on your friend and let them beat him until he dies. Your screen will fade out and you will have to try again, but the achievement will appear when you do.
Just to be sure
Get revenge on Sniper.
Once you've reached the clock tower in the eighth chapter of the game and found who's been shooting at you all the way up, interact with the body and kick them before leaving.
Long live the king
Steal the crown from the leader of the Spider Kids.
As you navigate the clock tower in Chapter Four, No Shelter, you will come across a large room with a throne, upon which sits a child in a crown that throws trash at your friend as they are led from the room. As you approach the group, the other kids will attack, so take them out until you see the leader climb down from his throne and start sneaking towards the back right corner of the room. Break out of the fight and kill the leader as they sneak away to claim their crown as one of the game's masks and earn this trophy.
You can only hit the leader while they are actively walking. If they sit on the throne or climb down, they're impervious to damage, and they'll sneak a curtain out the back pretty quickly. If you dash towards the leader as they start to climb down and leave enough of a gap between yourself and the spiderlings, you should have time. If not, restart from the checkpoint when you entered the room and keep trying the fight until you can take out the leader in time.
Naval blazing
Clear 20 sea mines in one playthrough.
As you sail around on your boat, you'll occasionally find sea mines floating in the water, large grayish silver balls with spikes on the side. After accessing the harpoons, you can blast them to clear them of their danger. Do it 20 times in one playthrough for this achievement.
Lullaby
Play the piano.
In Chapter Five, Down in a Hole, you'll be chased up in a room exposed to the outdoors as Mom chases you for the first time. Go through the room and over the rubble to find a door ahead, but before going up the stairs here, stop to interact with the brown piano on the left wall by the door. Do it three times to get this Reanimal achievement.
Dark tourism
Slide the sightseer into the pit.
As you make your way through the exterior of the factory in the first chapter, Dead in the Water, you'll see a body in a chair in a scenic spot overlooking a real fall. You can sit next to it for one of the resting spots, but interact with the body to push it over the edge.
It's a trap!
Reach Sand City.
When you go up the bell tower, try to roll the kid with the bucket up after defeating the petrified kids. Some others arrive and help you get to Sand City.
Home from home
Reach the small forest town.
When you're chasing Sniffer as he drives off with your friend, you'll come to a small town in a pretty rough state. The achievement is triggered when you do.
Into the abyss
Find your way into the breakthrough.
You enter the hole when you start chapter seven, The Spoils. Sail through the harbor and watch the scenes with the sheep, then proceed to follow them into the gap.
Friends like these
Accidentally shoot your friend.
When you get the key from the strung body-looking targets on the shooting range while navigating the sniper puzzle in Chapter Eight and have access to two firearms to get the keys, shoot your friend instead.
