[KaktoR]

No problem here

UltraARC should compress the game in 2 Data bins, Data1.bin (all files, except "Movies" folder and "HellbladeGame-WindowsNoEditor.pak") if you followed my way to use exactly.

Alternative compress all files (except "Movies" folder and "HellbladeGame-WindowsNoEditor.pak") seperatly with srep+lzma (set Treshold=100 in UltraARC.ini), name it Data1.bin and replace the archive. Backup your records.ini, otherwise it will be overwriten.