I watched the Krypton Factor avidly 1965-93, until they kept messing around with the format too much & ended up turning into a highbrow Crystal Maze.
The rounds were
Mental Agility: Very hard, I still remember The Chalice "The Alchamist's The Scales" "The Scribe's The Pen" etc..
Response: Mainly Flight Simulator, but earlier it was a bizzare mini assault course / logic puzzle.
Observation: Tell the difference / Continuity errors etc. Some of Steve Coogan's pre-Alan Partridge material.
Phyical Ability: The assault course, with some strange wooden obsticals in the later years.
Logic: A puzzle normally involving pentominos(sp?), edit for time because some contestants took hours to do them.
General Knowledge: Strange talking heads view of contestants, (nothing to do with David Byrne & Alan Bennett though), the answer from one question often linked to the next question.