If you say that someone is hell-bent on doing something, you are emphasizing that they are determined to do it, even if this causes problems or difficulties for other people. He accused the company of being hell-bent on achieving its cuts by whatever means.

Is it hell bent on or hell bent upon?

to be extremely determined to do something, without considering the risks or possible dangerous results: He was hell-bent on revenge.

What does it mean to hell bent?

: stubbornly and often recklessly determined or intent hell-bent on winning.