@Wicht - this is by no means an attempt to change your oppinion, Fitz won fair and square. I'm explaining what is lost to editing for some future readers.
There was the cursed brother, of course, but there was a part where he calms down only in presence of the brother (and yes, marine was my weakest by far ingredient). The party went in, were overmatched and ran. They encountered 4 exit problem and chose to go at it their way. The marine was lucky and made it out. The rest died. The brother
cheated death by offering himself as a moon guardian = werewolf.
As for death in moon goddess temple, obviously she is goddes of the moon, dreams and death
The stinky lava isn't just a minor game element - it is slow, but it will fill the temple and kill anyone still inside. It gives the DM a chance to decide how much treasure to give to the players and the players have a decision: run immediately or take the treasure and have less time to get out.
Finally, the encounters were left intentionally vague - whether more riddles, monsters or traps this is on DMs running it. The rules don't specify I have to specify every encounter (OK, maybe I do complain a little

) Not to say that Fitz didn't deserve it, his IS more polished one and I like the story about werewolf being confused because of Ettins heads, genius. I was considering why mine was befuddled and only come to possibilities: it is always changing as he passses different corridors...or he needs to attack, but this is his brother and he fights within himself. I went with the first one, it seemed fitting with the monster just wondering around.
The puzzles are meant to be solved - if you don't you don't progress - it is the same as when playing an adventure you miss half the treasure and are underpowered at the boss encounter. Maybe you didn't check for the hidden safe, maybe you just rolled poorly, but when you burn to death fighting that salamander boss, you will surely regret not having a ring of fire protection that was sitting in a secret compartment in the desk drawer.
In my case, the coins are kinda obvious so you always get to death. Whether you progress or not...well, the clues on the wall took quite a lot of words even in this short version to point the boys and girls in the right direction. And some thinking IS required, I may be old school, but there shouldn't always be the way forward. You can fail the dungeon. You can fail in the quest. You can NOT save the brother. You can even come to the end and cast different ritual, thus taking something for yourself instead of lifting the curse.