CursedPh4nt0m Railguns shouldn't have any accelerators, if a railgun has an accelerator it should be backwards, there could be railgun loaders placed randomly around the ship, missile launchers should be placed inside the ship, needs more corridors and backwards conveyor belts, weapons aren't blocking each other, the ship can still move, it should have thrusters on only one side, should have fire extinguishers with no doors... umm I think that's enough for now.
You have a ways to go if you want to beat what people on multiplayer come up with. That can still actually fight.