Board Thread:Antaeus' Arena: Audience Chamber/@comment-1515612-20160820001629/@comment-38511280-20190226100230

QuizTaker54 wrote: Acheron is still controlled by him. He could use it to cause Nico so much pain and stop him from moving. Then Percy just stabs him.

This could easily happen. It's not so easy. Nico managed to get through Tartarus by himself. Also, there is no reason why they would be walking by the Acheron. Percy can't control rivers like that as well, so he will need to be close.