The one rule that matters: the faster you run, the higher you jump. A standing jump gets you two floors. A full sprint gets you thirteen.
Land two or more floors up each time to build a combo — its bonus is the number of floors squared. One short hop, one fall, or three idle seconds and it's over.
Out of room? Bounce off a wall and flick your direction back at the moment of impact to keep every bit of your speed.