Somebody has already done this a while ago, possibly with a mage, though it was before they added the Monolith bosses. Might be easier with a Rogue given how awesome most of the passives are in the base Rogue tree.
Mage to the Max is impressive and must have taken some serious effort & dedication on @AndrewTilley part…
As he says, EHG should have an achievement for this like in Grim Dawn cause its one of those things that there are only going to be a few handfuls of people willing (or mad enough) to try it…
Yeah, I certainly had fun doing it and the base Mage class comes with some of my favourite skills which definitely helped in my overall enjoyment. Having completed everything in the game with that character the biggest difference was kill times. My Sorcerer with the same equipment and skill trees, but now with its full allotment of idol slots and passives, killed things about 4-5 times faster (on average). So it mostly comes down to patience.
Performing this same task in Hardcore would require another level of patience, which is likely more so than I’m willing to expend during this early access period. In the future if there was some equally silly reward to Grim Dawn’s for doing so, then I may feel obliged to try.