The boss fights in Deus Ex: Human Revolution have been the source of many of the complaints about the game, and as it turns out, there might be a very specific reason for why that is.

The video above (from the extra content included in the game's Augmented Edition), pointed out by Game Informer, features GRIP Entertainment president and founder Dr. Paul A. Kruszewski talking about the work his company did on Human Revolution. Specifically, it worked on the boss fights, which perhaps explains why so many people feel they were out of place.

"The guys at Eidos [Montreal] gave us the design, gave us the engine," he explained, "and we brought in our own behavior tree engine and we gave them back that experience."

1UP's review dives into the subject of the boss fighters, and there has been a lot of talk about them since the game's release last month. The complaints typically center around how they force players into a very specific style of gameplay where you have to gun down your enemy. In another game that might be fine, but it feels out of place in Deus Ex because that might be completely contrary to the style of character you've played up until that point -- you might decide to hack your way through everything and sneak around, never killing a single person. (This can lead to the bosses being very difficult to take down if you're not very weapon-centric.) On the other hand, some would argue that real life won't always allow you to go about things in the way you'd like, and so there's no reason why a boss can't come along that forces you to at least temporarily adjust your approach. However you may feel about that argument, it hasn't silenced many critics of the bosses.

Kruszewski specifically talks about the trouble with balancing bosses because players might come in with drastically different character types. He seems to suggest a balance has been found where anyone can tackle it, but there are many players out there who would say the bosses could be unnecessarily difficult.

It's also worth noting that Eidos Montreal didn't handle the PC version of the game all on is own. As revealed earlier this year by Shacknews, it worked with Nixxes Software BV to ensure the PC game got the attention it would need.