Paul did warn me about NSF Heavy mech up front - so I took the GEP gun...but...I decided to just shoot whoever I need shooting and go through the back. Iron and Copper didn't provide much of a clue, but at least a girl sold me a 10mm clip there for 175. Climbed the boxes at the back. Saw path to ground floor - supposedly where Gunther is supposed to be - but nah..I decided I could do this solo.
Climbed up - triggered a gas mine - ran out as the NSF dudes went ' I think I saw a dude with trench coat around somewhere.' Hah. Pop out of cover and capped his head. Went upstairs, two NSF dudes facing away from me, I used a defused gas grenade - to very little effect - almost got me killed too. End the mission with 4 bullets left on the clip. I'll give New York a retry tonight. but that flame thrower dude...dayum.
There's like a billion different ways to do that level. It's a shame you didn't go with the mini crossbow since - as far as I recall - it's gonna be a long while before you get another chance to pick one up and it's a handy, silent weapon. Also, the GEP gun takes up a fuckload of inventory space + ammo is rare and expensive. Not saving Gunther means a forced fight a little later on. Basically your BRO is a pansy-ass faggot who doesn't want you killing bad guys for reasons that will eventually become evident. Navarre and Gunther are tru bros who know the only appropriate response to terrorist scum is overwhelming firepower. (And 'skul-guns' in gunthers case).
Obligatory Desu Ex