I wish I had my Fate comics but
There is the whole beat the anti life equation feat (though he did need a little bit of help)
and then there's the whiped out Etrigan level demons feat with a flick of the wrist
And then he fended off the Spectre for a good 7 pages (Kent not Hector's weak get his ass knocked into the helmet ass though I don't know if this feat was retconned as it was pre crisis) >.>
oh and he created a barrier that stopped (I think it was kismet, someone like that) from mauling the JSA and took off his helmet to get some thinking time.