This achievement requires you to answer all 15 questions correctly without using any of the 3 lifelines (50/50, Phone a friend and Ask the audience) though it is also advised to avoid accidently moving the left towards the lifelines as that can glitch the achievement for some reason.
Now luckily since we're not all trivia buffs we can use the internet to look up answers as there is no time limit
to answer a question.
Mainly use http://google.co.uk
and either type the whole question in or search for part of the questions thats relevant for example:
Question: Also the name of a classic 19944 film, an insurance policy that pays extra for accidental death is known as a ''double'' what?
Search for: Insurance policy that pays extra for accidental death. This way you wont get mixed results thanks to the film part.