Step 1: Make sure you're on 10.15.1, otherwise it wont work. You will also need the latest version of WEG.
Step 2: add agdpmod=pikera to boot arguments (note: try to boot without it, I had to include it to boot. will report later if it still requires it? or if it was a fluke)
Step 3: Remove any and all kextpatches relating to graphic policy and/or boot arguments