Just use the speedhack. The Cheat Engine version still works better than Underrail's builtin speedhack.I played UR some years ago (2016 or so) and was somewhere halfway thru the game when I had to drop it, and later lost my saves.
I had started it twice to fix my build before, but I couldn’t bring myself to play again through the beginning, which I found very tedious.
Now, I’ve read that over the years Styg has modified the game quite a bit. Did he by any chance get rid of the boring bits?