Speaking in a post-mortem on the game at GDC, he admitted that the team should have spent more time and effort on these encounters.
“[The boss fights] were a big part of the game, and we should have put more effort into them. I’m truly sorry about that. Next time we’re gonna think about it more,” he said.
The fights were designed as a “thing to break up the pacing more than a way to test the player’s skill.” He admitted that “play tests did flag the boss fights as a problem” but claimed “they didn’t flag the severity of it.”
EGM’s TAKE: Well guess the team has to chalk this one up as a life lesson. When testing flags an issue, do something about it, don’t worry about how severe the issue is. It may end up being nothing, or it may end up overshadowing all the hard work the team put into the game. Now when people mention Deus Ex: Human Revolution you immediately think of those fights.