ABDOLREZA:

When the last predator stabs Edwin's back with its long shiny claws, to its surprise he survives and calls for help, so it turns him over (Why?! Why not stabbing him again?!). There you can see six grenades attached to his chest which simultaneously explode and throw the berserk predator backward a couple of meters away. The explosion doesn't do a damn thing to the predator! Except for a mild confusion caused from the shock wave! Not even a slight scratch!!

But in fact, such a six-grenade-explosion could actually tear the predator apart!

They are grenades not firecrackers!