For the next players, here is a copy/paste of the tutorial on the itch.io page:
"You are Cathy, the best and favorite plushie of Billy. This honorful role implies also to take care of Billy's sleep! Recently, it has become more and more difficult: Billy is having nightmares! Tonight, you will protect him to preserve his comfort, with the help of your toy colleagues. Lead the toys to fight the nightmares. You will need to explore the room looking for good memories to recruit more toys. Destroy the nightmare nests and protect Billy until the end of the night. Good luck!
Move with the keyboard (WASD).
Select the toys by making a box with the mouse.
Left-click to select/deselect them.
Right-click to move them.
Press E to call them all (or stop them from coming)!
Grab Billy's good memories (the pink orbs) to earn ressources!
Go near the chest and press I with at least one memory to summon a toy!
You cannot kill the nightmares but you can stun them using F!
Find and destroy the nests and survive for long enough to win the game.