Page 15 "...So what do we now? It's revived." You are missing one "do" should be "So what do we do now?".
The whole sentence kind of doesn't sound english. Something like "So what do we do now, that it's revived." would be better. No, it still sounds kind of wrong. I would probably drop the "It's revived." part. We can see that the monster have returned so this statement isn't necessary. This second part is probably subjective so take it or not ;p
Page 18 "While this one can protect if you if need be." this time one "if" too many. It should be "While this one can protect you if need be."