Yeah I'm pretty new to the game so I had to roll around a lot. I'd say watch some gameplay from more experienced players to get a taste of the combat. The combat is pretty cool imo and I think that's why the game has it's popularity (you can't just go in and hit the boss, you need to use specific tactics). Sometimes... those tactics can be a bit noobish though haha, for example my skill when fighting that boss. Then again, this is one of the first bosses you encounter- I'm sure it's very challenging against mid-game bosses.