Having so much godly power that you just don't care anymore. Fighting the mostpowerful beings is boringly easy and you don't care enough to give them a fighting chance. You just want it to be over.
"Abby has such a SaitamaComplex when she plays Skyrim. She just doesn't give a shit."
A door wall is a sliding-glass door or patio door. The term is yet another example of banal Michigan vernacular, where in the residents latch on to company names, trademark names, marketing terms and product names from local companies. The terms become embedded in the local vocabulary and eventually become accepted as actual valid words and phrases. In this case the term comes from Wallside Windows in Taylor, MI (a large window manufacturer), where 'door wall' is their created word for sliding-glass door.
"Bob! John's gonna bring over them doorwalls from Wallsides on Tuesdee afternoon 'round two-thirty. Get 'er done!"