Him: 8 speed / 7 traction / 3 torque / 0 weapon / 12 armour
Basically be a flailing ball of death, doom, and neons. Win aggression by showing zero fear of him. Ethan has to last 3 minutes in there with me and show consistent match control somehow. His wheels are also so close to his chassis and wheelguards that they're basically rubbing up against them. Any warping is gonna mess up his driving. So...Hit him, whatever it takes: catch him on the return swing; face him sideways, let him push me, and jack knife; zoom up to him as aggressive as always and then back up a tiny bit instead and hammer him; take advantage of oversteer; monstertruck him both head on and at an angle. Oh, I can hit from both sides too. Be on the lookout for hit and run tactics, where he zooms up, boops me, and runs. Always respond with extreme aggression, and then mix it up suddenly and don't. Basically, throw in something unexpected occasionally. Yeah yeah I'm sure he'll have some clever counter. Get used to it, time it, and nail him.
Try not to mess with the statues - they're atmospheric and I like my rooms atmospheric. Same goes for the house robots. They're just hardworking guys doing their jobs. If one attacks me, though, let him have it right back. Let him have it more at the end if I KO Avanti and it's justified revenge. Mostly just kill Avanti, though. Not all Italians work construction, you know. Some don't like hammers.
Good luck :)