I will retry to save and load when I have time to and will update you.
1. I did not touch the slo-mo. This was mostly because I never felt in danger enough to need it, and the doom style of the game doesn’t have the flash of a John Wu movie that would give me the wow factor
2. I got all the discs, missed one sample but that was because I was on a time crunch and wanted to finish quickly. The armor boost meant nothing to me because I was hit so rarely I don’t think I ever lost health.
For difficulty the time to kill on the drones was good. I think the problem was they were always far enough away that I could pain state them before melee or dodge if they spit.