I don't know if it's because I had the Legendary Edition and was using the Non-DLC version of this mod, but I was running into STUPID strong mobs. I'm around level 30 and was running into level 1000 mobs. The Centurion in the tonal lock puzzle for "Lost to the Ages" was level 1K. I managed to glitch kill it (good destruction training). But later in Blackreach, I was fighting a 1K, a 500, a 400, and a 300 all at the same time... Needless to say, I didn't last long.

I have unsubbed from this one and subbed to the SE version... hopefully that fixes things