QUESTIONS, no spoilers for any story aspects please

Ok, so 1 how do I get a lot of R&D besides scanning and random, 2 how do I get Fulton mine/Gustav/anything else and 3 HOW DO I GHOST PHOTOGRAPHY

You can get those weapons if you S Rank Certain missions,you'll get their specs as a reward
Looking for potential Recruits are always a pain,just keep on Scanning,use the RECRUIT function too,you can get Awesome Recruits through it
For the Ghost Photography mission,equip the Sonic Eye and the Camera,use the Sonic Eye and move toward the Sound Circles,if the Numbers are higher than 19,the ghost is near you,equip the camera and start looking around for it,then shoot it with the Camera,be aware that you CAN get an alert by Running into the Ghost's Field of Vision,it will attack you too

quote callanrocks

Next question, how th hell do I kill peacewalker and pupa custom!?!?!?

You shoot them.

Carl Gustav clearly puts a hurt on their AI pods or for any of their parts.
Has very slow reloading time but whopping damage in return. LAW and RPG7 is of great help too. Btw, anyone knows where can I get Rank 5 upgrades for LAW and RPG7?

Note: chaff grenades don't work with the custom ones. (learned it the hard way)

great, now i need to AD-HOC party... or at least figure out the internet function without it