The perfect way to start a campaign, a must have if you've ever wanted a quantifiable way to keep all your settings connected. The combined with Carcosa are essential for a great years long campaign.

Going Through Forbidden Otherworlds, or GTFO (cute huh) is again a case of me getting something that is exactly what I need. While I am not going to play it as-is, there is a tweak mentioned in the book itself that works perfectly for me. In fact, a lot of this book works perfectly for me and my next set of adventures. I can't believe I am saying this, but I will turn up the gore factor in this Lamentations product for my needs.

Not a real fan of the art inside but I see why it works for this.

I have to admit that I'm a little disappointed. I'm a big fan of some of Zzarchov's other works, especially One-Thousand Dead Babies and The Gnomes of Levnec. This one has a good premise and some solid ideas, but it leaves a lot on the table. I was definitely irritated by the fact that it suggests you roll up any demons on the Lamentations table for the Summon spell, or the Random Esoteric Creature Generator. The adventure would have greatly benefited if the author had pre-generated a few of these on your behalf, allowing you to roll or choose which one, or go to the forementioned tables as a fallback. It just smacks of laziness.

There were some nice hooks, but the adventure doesn't talk much about what else you can do with the adventure location other than closing it. I can imagine that it could be a great place for PC mages to perform experiments, or to create their own transportation nexus. It can also be a great hook for future adventures (e.g. demon invasion).

Also, there isn't much to do for role-playing or any kind of faction play. The few encounters that aren't innately combative are pretty straightforward.

Finally, considering the location, I think there could be a bit more creepy atmospherics. The sole survivor, with flies embedded in his face, is probably the best step in that direction.

On the plus side, as I mentioned, the premise and the hooks are quite good. I really like the nastiness that happens when characters fall asleep in hell.