From playing and observation of the current Survival mode, I find that the scaling of mobs could use some work for low players (2-3) and some changes may be required to make classes all have some viability in survival as opposed to some being must-haves. On EU at least, there's been a lot of 2 player teams going Psiops - Tech or Pathfinder - Tech and abusing Gravity Gun and Assault Jump/Speed of Thought to maneuver themselves into locked Apollo and Airlock and then lock creeps/minibosses in/out. The Psiops and Pathfinder then usually take a backseat while the Tech MotMs everythigng with a Barrett or Crowbar while being immune to all ailments except Shortcircuit. GotB is handled by manipulating with GG into/out of Apollo and then fire at it while it cannot fight back and MotM shiva kills just about eveything else that could cause trouble (Perses, sometimes GotB if things otherwise aren't going well) Easy fix might just be to have all gates open by default, though this still would not take care of scenarios where Psiops or Pathfiner help the tech get on an otherwise inaccessible wall ledge from where they just rain death on everything not flying. Outside of those exploit situations, people haven't been able to beat Survival on EU and it seems that Tech is almost a must have for the insane DPS that MotM dishes out with Barrett still. No other class gets close to the raw dps output. Furthermore, the current survival still suffers from a very tough Perses and wave 37 Nazara+mob. Once those are ironed out you could consider basic survival to be more beatable by conventional means and other classes, although Tech will still outshine everyone. Considering that Survival Nightmare is also an option, it actually is too difficult to get very far in it currently, though I can see that the above trick may well with some luck succedd even there. On a very small aside, is it intended that all classes are available to players in survival even if they do not meet xp/rating requirements?