Omnishambles

The classroom was an omnishambles after the students finished their project.

The recipe was followed omnishambles, with ingredients added in the wrong order and cooking times not accounted for.

The house was an omnishambles after the party.

The living room was an omnishambles after the kids played all day.

He's an omnishambles of a cook, every dish he makes is a disaster.

The house was in an omnishambles state after the party.