This achievement is story-related and cannot be missed.
You will come to a boss fight against Solomon Grundy. Key to winning this fight is to make use of the explosive gel. Use the quick-disposal of the gel by pressing
+
. Place the gel on the 3 circular platforms on the ground (make sure these platforms are open later on in the fight). This will drain Solomon's energy and allows you to take him out. The fight consists of different stages that have a slightly increased difficulty each time.
All in all if you keep spraying the gel like crazy you should end this fight in a few minutes.
(video credit: PS4Trophies)
Hope this helps you guys!
Any improvements? Please let me know in the comments below