As I said it before, the game gets hard when you play it as a D&D game.
Engaging enemies in melee without dipping, and things like cleave which does not exist in D&D the way Larian implemented it, without jumping behind someone to backstab, without using nonsense Larian grenades, without WMD barrels, without shoving being the main damage dealer and without having everyone being ranged and climb as high as possible or stealthing even though they suck at stealth which does not matter because of the short vision cones.