LogFAQs > #968078444

GR45 with no set items is very doable even by most lazily-cobbled-together builds simply by making use of a single legendary gem, Legacy of Dreams (you'll want to level it up some first). There's no need to level up a monk and learn how to play Wave of Light, for instance; that's way overkill.

50m gold chain is very easily done in areas like Temple of the Firstborn or Ruins of Corvus that have large swarms of puny enemies that nevertheless can be made to drop a ton of gold using the Boon of the Hoarder legendary gem. Temple of the Firstborn would be my pick, as the swarms tend to show up more quickly and all at once, and there are fewer doors in the way to have to click on, but I've easily done it in both. It's best done with a maxed out gem at T16 along with a follower with Avarice Band equipped (Act 3 bounty drop) to help scoop up all the gold. The gem doesn't necessarily have to be maxed and it doesn't necessarily have to be T16, but the more you skimp on both of those things, the longer of a chain you will need to do to pull it off.

Out of the remaining conquests the easiest one would be the "kill all bosses on T10+ in 20 minutes" one. It only seems daunting at first, but once you have a good mobile build that can crush T16 content, this one should be a breeze (you can tack on things like Warzechian Armguards, Krelm's Buff Belt, Wreath of Lightning legendary gem, etc to most builds to make them more mobile if necessary). 8 set dungeons is a pain and absolutely requires grinding out gear on at least 2 different character classes, and entire campaign in 1 hour is actually very difficult compared to the bosses one, so just pretend those other two conquests don't exist.