Easier to interrogate riddler thugs or follow a guide?

[Aideux]

To get all the trophies? Like which one is easier/will take the least amount of time?

[Frag Maniac]

You have to interrogate his thugs just to unlock the trophy icons on the map, and a guide would tell you the same thing. If you mean a guide that shows where trophies are, you could do that, but it might take just about as long as just interrogating, because you'd have to keep looking at the guide for each one, vs one interrogation showing several spots that are easy to find.

It's not so much that it's hard, there's just a lot of them, and interrogating them isn't hard, because you just look for thugs and cars highlighted green. If they stop showing up, that means you have to progress further in the story.

One way to make interrogations go a bit quicker though, is to stay in the Batmobile when you see a guy on foot highlighted green, and bump into his cohorts, and jump out of the car when he's the last one. The car will quickly shock them, and then all you have to do is smack him a couple times.

Just make sure you don't bump into green guys with the car, because it will incapacitate them. Also, once in a while green guys will refuse to talk, in which case cape stunning or countering their strikes often makes them comply.