Bosses so far are very hard, but the level's themselves feel easier than the SoulsBorne games. It's much more stealth orientated, so getting insta-kills with drop attacks or stealth backstabs is very handy. Not every standard enemy can be insta killed, but you can take out a bar of their health. I have only seen people with up to two bars, and they are either mini bosses or actual bosses, so a lot of people can be insta killed. The "bonfires" or shines ideas or whatever they are called that are before the bosses are pretty close to them, so the walks back when you die isn't as bad as a lot of the SoulsBorne bosses. You can also just slowly pick off the enemies, then hide and wait for them to stop searching and rinse and repeat. It's still a very hard game, but it feels fair. Maybe rent it first to see how you like it or borrow it from a friend if you can.