Don't starve and reach the endpoint. Eat fruit and monster to keep energy.
Normal Mode: WASD to move
Eat mode: only in normal mode, press space to eat monsters and return energy. You can't move while EATING.
Hungry mode: In normal mode, holding the left mouse button can trigger, and releasing it will cancel. This gives you faster speed, double jump, and right-click to dash; this mode also costs more energy.