Sacred is dead easy to finish but damn near impossible to complete. Starting a new bronze campaign, you could probably get to the end in well under 20 hours and that would include a lot of exploring. My focused run through to get the achievements for uncovering less than 20% of the map and not buying anything took me about 12 hours. You pick up a lot of achievements just by playing through but some require a bit of effort. None are particularly hard to get, just time consuming. My longest running character, the first one I started, is a level 80 odd Shadow Warrior, up to Platinum difficulty. I got the Niob achievement by joining a game online, I've not yet reached it offline. The max level is 250 too which must take forever to get to, I've spent over 200 hours on my SW game. The annoying thing about Sacred 2 is that skill choices are permanent, meaning that my SW is a dubious build with a few wasted skills. With what I know about the game now, I could have built him much better. That said, he's more than hard enough, rarely takes more than a couple of combos to kill most bosses and the last avhievement I got was the one for drinking 1,000 health potions because he never really needs to (I'm carrying over 3,000 of the things too).

Getting the achievement for visiting all the temples probably needs a guide. I've explored 90% odd of the map and I still managed to walk straight past a couple of them. Getting to level 15 with every character is time consuming, requiring about 12 hours per character and doing the same missions from the start of the game over and over can be dull.

I loved the game (Or I wouldn't have spent over 300 hours playing it) but I can't imagine ever completing it. Doing that would require getting to Niob difficulty, maxing your character and finding all the employees dotted around which would take forever as far as I can tell. If you're a fan of loot-em-ups though, there's few better games out there.