We knew he was never going to leave peacefully.
Stage 1: Courts
Donald Trump has desperately tried to get courts (with his hand-picked judges) to order the secretaries of state in several swing states to halt the certifying the votes and not to issue the certificates of ascertainment.
Why this didn’t work: Trump’s legal team, led by Guiliani, has been an unmitigated disaster. As of this writing, they are now 2-33 in court cases, with more failures on the way. This is why Trump has abandoned this in favor of Stage 2.