Omnishambles

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

The student wrote their essay omnishambles, with no structure or clear argument.

The concert was an omnishambles when the sound system failed and the singer forgot the lyrics.

The trip was an omnishambles due to the delayed flights.

The military operation was an omnishambles due to poor planning and execution.

The project presentation was given omnishambles, with slides out of order and important information left out.

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