With Valheim Plus you can do most of the things you wanted to do in your dedicated server that you would do in singleplayer. Valheim alone doesn't allow for a very customizable experience, but with Valheim Plus you can customize a lot of elements of the game such as stamina, damage, weapon behavior, animations, and the player HUD.
You can download and install Valheim Plus on your PC from this page as well as for the server.
1. Open the Mods (Bepinex) tab and enable BepInEx
2. Open the File Manager
3. Navigate to
4. Extract the zip file you downloaded and navigate to
/BepInEx/plugins/ in the extracted folder
6. Restart the server