Hi DnD friends,

I'm tackling a new DM challenge and could use some guidance. I'm designing a dungeon where humanoid beavers are attempting to awaken a sleeping god. Their efforts get derailed when they offer the god a magical plant that overgrows their entire base, warping the rooms and fusing many surviving beavers into half-plant, half-beaver creatures.

Since our group is relatively new, I've found that combat can be a bit slow. To speed things up and make combat more dynamic, I want to include environmental elements and traps—things like shelves that can be pushed over or a chandelier that can be dropped on enemies. I hope this will make the players feel more impactful when they pull off creative moves.

I plan to design a large building that encourages investigation, puzzle solving, and backtracking. My goal is for the players to get familiar with the map before combat, allowing them to discover useful items or environmental features they can take advantage of when enemies appear.

Since I've never done anything like this, I'm seeking advice on how to approach the design. Are there common pitfalls I should avoid to keep the building fun? How large should the maps be if I want to run this over 3 sessions, each about 3 hours long? And what types of puzzles would fit well in this environment?

Thanks a ton for your ideas! I’m already feeling like I may be reaching too high, but I’m excited to give it a shot!

DMs, how do you decide if an NPC dies at 0HP (like a monster) or drops unconscious and starts making death saves (like a PC)? I'm a newish DM (been playing off and on for 10 years but never run a campaign that had legs until now), and our last session ended with the death of a recently-introduced barbarian NPC at the hands of another barbarian NPC. I made some other missteps but the big one seems to be this death - some of the players were shocked that barb #2 had done enough damage to kill barb #1 outright. I just had #1 die because she hit 0HP, and it hadn't really occurred to me that she should have gotten death saves.

Any rules of thumb for how you handle NPC death/dying? Or, if you're a player, how you would expect/like to see it handled? Happy to provide more context if desired.

Thanks!