Minesweeper trap (no spoiler tag, as people already exposed it... :\) is long, annoying, and un-fun for half the group while the other half takes a half-hour to solve it.
-Final Enemy[ies]- needs some beefing; too easy for the CR. Also, iirc s/he needs some correcting for 3.5.
-the mooks- were great, and so were the traps. My PCs remember the mooks more than the traps.
I gave that -weapon- a new ability, since I scaled the adventure up. True Seeing on the reflection off the blade, nothing powerful.
Overall, an above average published adventure. I've played better.