Done. I haven't controlled the teacher, just Gren trying to get the group to organize. Some things to consider for those in the Survival Class:
More Itzamnas are coming in from every direction in groups. Take that into consideration if you intend to try to take them out on your own.
Gren only thinks there are five Salamanders, where there can easily be more. They're also shooting at your guys high above from the trees, and always move after shooting. Just because you go to the last place you saw a jet of acid, doesn't mean you'd find a Salamander there.
It's almost raining Grimm. Take that into consideration, because sometimes people forget to look up.