Tested out a new idea to stop levelling marines after gaining their class at level 3. Mainly just wanted to see if the time spent in the levelup menu was being made up later, and it looks like it is. Most of the timesaves on this run were actually from faster load times, because I finally got around to reinstalling the game on an NVME drive. Probably done with medium at this point, but still enjoying the run, so nightmare will continue.