I've been playing for quite sometime. To me it comes down to a certain few aspects of playing style, and brute force. I love going in and rushing and getting as much as I can. I've played fomar for years on gamecube and solo'd. That was a pain. My luck with RAmar has always been, above expectations. One of my favorite bragging rights is on my xbox I had a ramar that was lvl 100 and I can solo ultimate dark falz. My lvl 90 fomar dies in one hit on VH darkfalz. Now there's some reasoning to that, offline and no access to trading for better stuff. I personally love my RAcast setup right now but the stats he has you need to be lvl 200 for. My RAmar I could solo at like lvl 170 with nothing too fancy.
Here's my notes on somethings.
RAmar or RAmarl can have support tech s/d. Everything else RAmarl idk. However RAmar I had success in both long range and short range.
RAcast is always considered a secondary HUcast because of the max ATP and choices of weapons he can use. And traps.
My weapons are
Psycho Raven
Arrest needle
Iron Faust not on RAmar
Dark Meteor
Frozen shooter
Asteron striker
Daylight scar
Ultima Reaper
Yasminkov 9000m
My shields and units are
Sonicteam armor
Gratia racast
Red ring RAmar
Cure freeze
Centurion battle
Centurion ability
Adept
This allows me for my racast to have max resistances idr what it gives my ramar being he can't use gratia.
My mag is 5/165/30/0 iirc
I also believe I am using a different mag on my ramar.
These are higher geared stuff yes. But I wanted to point out that you can make beefy as hell characters.
This may seem useless information but I wanted to point out what I personally use for my RAcast and RAmar and I enjoy it. Also if you had macho blades you can give yourself lvl 7 buffs.
FO classes idk if they can solo but it is possible. And they are expensive. However you can ask a gm for meseta rooms.