Like you guys, I've seen the Batman Arkham Video's guide to this annoyingly hard Riddler challenge. And like you, i just couldn't get the stars aligned perfectly like they did in their video, so after 10 million tries, I finally devised a reliable, RNG-free way to finish this god forsaken map.
Quick guide in important parts of the video:
0:25 Silent Takedown the dude around the 2nd segment of the railing (first short segment)
0:55 wait for the henchman to mention that the dude is out cold/not waking up before throwing the caltrops. MAKE SURE YOU THROW IT BEHIND HIS FOOT OR ELSE HE WOULDNT GET STUNNED
01:06 make sure there are no dudes in the bridge before climbing up the ledge
01:10 you might not get the double ledge takedown prompt as quickly as I did here, but just shimmy along until you get the prompt
01:40 perhaps the most RNG heavy part of this guide. Stay out of sight until Riddler comments on the dead guard. Wait until the jammer henchman (or the other armoured henchman) leaves to go check shit out before sprinting
2:00 you may need to hit just one wall to get their attention. Try to do it quickly or they may be too far and not hear it
02:15 any henchman may come to the grate at this point. Try to get an armoured or jammer one in your takedown. After this, there's just 2 henchmen left and you can deal with them however you see fit. You might get shot a couple of times, but thats ok.
Hope this helps, 9 years after the game released lol
Played on PC using Steam Arkham City, GOTY Edition
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