This is the 26th encounter in my 4E conversion of The Sunless Citadel. I beefed up the goblins and added some twig blights in the study to make combat even worth it.
Encounter 26: Nature’s Lore
Encounter Level 3 (775 XP)
Overview
The PCs traverse the underpass and find themselves at the end of a long corridor facing two [...]

This is the 24th encounter in my 4E conversion of The Sunless Citadel. I created the bugbear gardener, a 2nd level skirmisher for this encounter. The encounter is a +3 above the maximum level a PC should attain in this module, making it a hard encounter, technically speaking. However, I’ve staggered the enemies into [...]

This is the 23rd encounter in my 4E conversion of The Sunless Citadel, in which I take a stab at creating my first 4E disease.
Encounter 23: The Goblin Workshop
Encounter Level 1 (200 XP)
Overview
The PCs find themselves in an alchemical workshop where Belak the Outcast’s goblin lackeys work to perfect an elixir that will turn living [...]

This is the 20th encounter in my 4E conversion of The Sunless Citadel, and the last encounter of the first level of the dungeon. It’s also the hardest encounter to date.
Encounter 20: Hall of the Goblin Chief
Encounter Level 5 (1000 XP)
Overview
The PCs enter the throne room of the goblin chief, a hobgoblin named Durnn. They [...]

This is the 19th encounter in my 4E conversion of The Sunless Citadel. I knew that if I combined this encounter with the goblin chief, it would be too difficult, but it took me a bit to find the best way to crop the map.
Encounter 19: Welcome to Goblinville
Encounter Level 4 (950 XP)
Overview
The PCs enter [...]

This is the 17th encounter in my 4E conversion of The Sunless Citadel. One difference in the design philosophy between 3.X and 4E is the importance of terrain to an encounter. While some room descriptions note piles garbage or other “terrain” features, they are absent from the map. I’ve added a fire pit to this [...]