I will be uploading some Sewer Pack and Tunnel Pack updates in the next week.
I have also completed some additional models for the Cellars Pack including new corridors and large open spaces for the level designer to place additional walls ETC thus speeding up the construction of complex cellars. These models will also be included in the Tunnels pack so please keep an eye on the Store and update as and when.
Expect to start uploading these models to the Store in the next couple days.
There is a free example of these in my free models thread in the other forum.