Hey there kind reader,
I have been playing around with [Atlas] recently and this is what i came up with. Putting Defy on him is kinda overkill, but it can be useful from time to time. Mod wise there is not much to say, Umbra mods obviously and some strength together with the [Path Of Statues] augment which comes in handy to stack armor without using your Petrify, which means more energy for your Landslide. Adaption makes you almost unkillable on top of this. Arcanes are personal preferences as always but this combo seems to be the most useful to me. If you play solo you obviously do not need Energize.
Gameplay wise there is not much to explain, hit stuff and have fun. I mean that is the whole point about [Atlas], am i right?