Good until he murdered an entire floor of innocent people...
I was rooting for him up until he starts shooting random people in windows of buildings for no reason other than they are involved in the stock market, then he goes and murders a building floor's worth of innocent people (minus the "bad guy").
All those people that earn a living as traders, who don't have yachts and mansions, who live in middle-class apartments...the main character just goes and murders all of them.
It was a good film until it turned into Rampage.