A mouse. A kitchen. One very light sleeper.
Collect every crumb in the kitchen. The cat sees whatever is inside its yellow cone and hears you when you scurry. Duck under the table, the sideboard or the crate to vanish.
Move: WASD or arrows, or drag anywhere on screen.
Scurry:
hold Shift or the Scurry button. Fast, loud, and it burns stamina.