There's no two ways about it -- Lords of the Fallen invites comparisons to Demon's/Dark Souls. The developers are painfully aware of the fact, almost immediately surrendering into an anticipated half-chuckle as the first syllables of the From Software's projects names were uttered. That's ultimately okay though, because Lords of the Fallen doesn't aim to mimic the Souls games.
Rather, Deck13 is structuring Lords of the Fallen to be a bit more of an accessible Dark Souls. That doesn't mean it's going to be easy -- spending any amount of time in front of the game makes that much wildly obvious. But, it's also not going to be punishing. Challenging and complex? Definitely. But not punishing.
If Lords of the Fallen comes off as punishing, there's a fair chance that you're doing something wrong. Dying will happen, but the developers don't view deaths as a failure; they view it as part of the learning process. If you're repeatedly dying, try something new. Be more patient, learn the patterns of your opponent, and try to limit battles to one-on-one.