To add a bit more clarity:

Difficulty 10 isn't that hard. I regularly play on 10 and I'm not great at the game.

The truly challenging part of the challenge was that the devs were supposed to use specifically chosen niche, underutilized, and poorly balanced weapons and gear to prove the point that the devs are out of touch in regards to the gameplay and balance of the vast majority of the equipment available to players.

A big aspect of this whole situation is that it arose because a huge chunk of the playerbase is fed up with the developer's decisions.