Haven't played much recently but I did try ToFS, cleared whole first floor twice over and no key so I left that rubbish. Didn't yet give giants in GD a try but will eventually.
I'm currently camped at the "safe spot" in lguk at the exe/sage camp. Been doing that since 44, about half way through 45. usually 4-10 or so people in the zone when I play but none seem to bother with that camp. In theory it can take me to 49, being that most of the mobs are 35-37 if the wiki is accurate on the levels. I even made a lil map for anyone wanting to give it a go, I haven't seen the sage so not sure where exactly it spawns though:
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almost had a corpse run learning about the fake wall, good game!