Vermintide Mod Framework (VMF) provides an unofficial modding framework for Warhammer: End Times - Vermintide. It contains a Lua code injector that allows for custom code to be executed at runtime, a mod manager for enabling and disabling mods (Vermintide Mod Manager or VMM), a set of tools to create and edit mods and a basic API that lets mods interact with the game loop.
Adds a button to the Shrine of Solace's Offer page to lock selected traits before rerolling. This way you are guaranteed to get an item with desired traits. Rerolling with locked traits costs more tokens.
To install, put the .mod file from the archive into [folder with VMM]/Mod/mods and activate it in VMM. Click Refresh to get the mod to show up.