BAJJ
I think Axel is still alive. There's no way the author killed him just like that and in a horrible and gruesome way. If Axel is going to die, I think he would die a heroic way. I'm sure Dom and Hera got to him and saved him first. The chapter said that Silas didn't see his face, just his back so my guess is, they are hiding Alex and used a body double to trick Silas.