1. More wars on the planet. 2. Higher consumer price inflation. 3. Higher Gas prices. 4. Less tax for rich people. 5. Cut social services for lower/middle class. Well #4 is a real one he will achieve. I don't remember if he mentioned created a massive Trade War with the entire globe but that one is perhaps his most spectacular achievement . And I'm not an American so I'm not sure if he reduced medical expenses and insurance for people like he promised.
and...make nuclear war against baddies hiding in holes. Decision maker vs decision maker, sparing the innocent population. Have Elon build a mega ICBM that could deliver a 100 ton earth penetrator with a pure fusion, low radiation bomb.
Trump goes to war with Iran mostly because Israel told him too ( could also be his massive ego ). Just like Israel told George W. Bush to invade Iraq because of WMDs. Who said history can't repeat ?