Not an amazing game, the game has camera issues and it's a bit too restrictive on the movement, another problem is the questing system itself, it's bland and boring.
The upsides are the customization system for your talents meaning that you'll get bonuses depending on what talent tree you chose giving you cool bonuses, the loot that you get, the weapon variety and overall flow of combat (feels meaty, maybe slightly less responsive in terms of animations), the game does emphazise exploration, meaning that the more you search for hidden stuff more bonuses you'll end up receiving.
Another downside is that if you do most quests you'll end up extremely upleveled thus taking the challenge out of the game, the level cap is 50 so you can't do big talent comibinations, add to that no mount or big movement speed buff and you'll have hours walking/running.