I’ve been collecting all these Titan parts I can’t seem to know what to do with them my strongholds at level 21 I have 3 Advanced buildings cannot seem to find out what the Titan parts are for hopefully this is in the right spot
You can use them in your lodge (if you built one)
You need to build and research in the lodge first. You can convert a forge into one!
To add onto the above, here’s @Mariamne’s useful crafting guide, which includes Hunter’s Lodge and Titan Battle Items on the bottom: