Reading the reviews you would think this was a terrible game. Now, it's not a great game but, it is a good fun hack n slash with the occasional puzzle.
It's lite on the RPG elements. There are no levels but, you can upgrade various abilities through killing the monsters in a particular way (melee, ranged, magic).
There's loot (weapons and some armour) and gold. The gold is not used in the campaign. Instead it's used when building maps in the crucible.
I haven't used the crucible yet in any real depth so I can't comment on that.
Definitely worth your time if you like a good hack n slash.