There is a demo for this game, not sure if it is on GoG but it is on other platforms. I tried the demo, really enjoyed it and bought the full game and had such a good time and even 100% the game which I rarely do. There is so much build variety. From a bleed based dagger build to wielding a shotgun in one hand while using a severed magic arm that slows enemies down when you hold it up, to just blasting spells or even just using spells to make suits of armour come alive to fight for you. Loot is randomised so you're never sure what you're going to get which makes putting together a build even more fun. Beyond that the actual story and characters are really well done. I didn't think I would care for the story but I actually loved the world that's been built here and I really enjoyed getting the different endings.