Trials played with both are usually the mind puzzles. You have to switch to Catwoman and find the key among the many cages with keys. At the end of the solo trials, Batman is given a chart with the location of the key. Objectives/Trials can be done with Batman alone or with Batman and Catwoman together.But in order to take him down to the GCPD, you’ll have to collect ALL Riddler Trophies around Gotham. You’ll come in contact with The Riddler himself while completing them.Riddler’s objectives/tasks consist of either Batmobile races, mind puzzles or challenges.These keys are given at the end of each Riddler’s objective/task. In order to save her, you have to get 9 keys. Catwoman has a 9-sequence bomb around her neck.You get to see and play with two characters – The Riddler and Catwoman.NOTE: We finished the challenges in our first playthrough – there might be differences in New Game+. The last Riddler’s Revenge objective requires you to find all the Riddler Trophies around Gotham in order to fight their creator, Edward Nigma aka The Riddler.
Because you need the Batmobile to enter these objective areas, you have to progress through the main story.
