hell bent for leather

Translations
Очертя голову
He was hell bent for leather to finish the project by the deadline.
Он очертя голову пытался закончить проект к сроку.
Definitions
An idiom meaning to move or act with reckless speed or determination, often without regard for safety or consequences. Originally associated with riding a horse at full speed, it now describes any action done with intense urgency or enthusiasm.