Panessa Studios riddle Bug

[Ratimator]

So there is a Riddler trophy just beneath the "Under the pale moonlight" A.R. Challenge in Bleake Island.
There riddle requires you to throw the Power winch on the Charging station and disrupt the shield for 10 seconds which protects the '?' sign. The problem is that I tried to use the batmobile canon fire to blow the '?' sign, which actually worked. But now I'm unable to obtain the Riddle Trophy since I can't hit already dammaged '?' mark. Could somebody please help me with this? This is the only riddle remaining for me to begin the 'Knightfall protocol'.(And watch the actual ending)

[JonoAMano]

After you use the Power Winch, disrupt the force field with the EMP, launch high into the air and deploy the Line Launcher Tightrope above and before the force field resumes, do the 3 green lights above the force field illuminate properrly? If so, Batarang all 3 lights from the tightrope and collect the trophy.
https://www.youtube.com/watch?v=knyuEQ4aoCo

Also, I believe (can someone confirm this?) that you can trigger the Knightfall Protocol as long as you've completed a majority of the Most Wanted tasks.

[Ratimator]

Originally posted by JonoAMano:

After you use the Power Winch, disrupt the force field with the EMP, launch high into the air and deploy the Line Launcher Tightrope above and before the force field resumes, do the 3 green lights above the force field illuminate properrly? If so, Batarang all 3 lights from the tightrope and collect the trophy.
https://www.youtube.com/watch?v=knyuEQ4aoCo

Also, I believe (can someone confirm this?) that you can trigger the Knightfall Protocol as long as you've completed a majority of the Most Wanted tasks.

That helped. I had been stuck there for a long time thinking it was a bug. Thanks a lot.