Just wipe it down. It is what it is, wear marks give it character. Nice grips, BTW, mine came with some tatty old Pachymars. If you have large hands, you are going to love the grip angle on this gun. One of my best 45ACP shooters.
Did you get mags? Because if you didn't, they are becoming collector's items.
I am a dyed in the wool tinker. It's a nice gun so I would be inclined to pull it apart and then attack that slide with either/and 1000 grit sand paper, steel wool and scotch bright. I would prefer a somewhat uniform matte finish to dings and scratches. You could after going to finer and finer abrasives break out some flitz and make it shine . . I'm just not real partial to super shiny guns.