We cut a lot of bosses. A lot. We had so many more," he said. "It was a much more ambitious, crazier game. And as you go through development, you start realising, 'No, it's too big, we can't do this.'"
Barlog said a single boss battle took 18 months of work from a team of 30 developers, so as such, the number of boss fights had to be scaled back to make sure the game actually came out this decade. "One boss takes like 30 developers a year and a half. It's an absolutely massive scale when you really consider it, and you measure it against other games in which we finished the game in a year and a half," he said.
The developer also pointed out that the "boss team" had other tasks as well, which took up even more of their time. At the end of the day, Barlog said, "It became a reality that some of these things will have to be cut."