I've run it completely from beginning to end in 5e.
I'll agree that Book 1 is great for a low-level romp- but to say that Book 2 is "grindy" is really missing the point.
Book 2 is an Underdark explorer's paradise. It was definitely my favorite part.
With 5e, parties that explore every nook and cranny will end up very high level by the end- you'll need to ramp up challenges as they level. By the time the party made it to Book 3 in my first TNB game, they were level 16 or so with a plethora of powerful magical items. If I hadn't upped the difficulty and used more powerful foes, the second half of Book 2 and all of Book 3 would be a cakewalk.
It was a fantastic campaign though, I'm running another heavily altered TNB game in a5e- they're between books 1&2.
I'll agree that Book 1 is great for a low-level romp- but to say that Book 2 is "grindy" is really missing the point.
Book 2 is an Underdark explorer's paradise. It was definitely my favorite part.
With 5e, parties that explore every nook and cranny will end up very high level by the end- you'll need to ramp up challenges as they level. By the time the party made it to Book 3 in my first TNB game, they were level 16 or so with a plethora of powerful magical items. If I hadn't upped the difficulty and used more powerful foes, the second half of Book 2 and all of Book 3 would be a cakewalk.
It was a fantastic campaign though, I'm running another heavily altered TNB game in a5e- they're between books 1&2.