Just as a quick feedback...
all stages play well, except that most recently last point got impossible to take
red tends to switch to a massive number of engis and fortify the first hallway before the last cap, and with that area only having two entrances (both from the same side, near to each other), it became too easy to engistack and defend, might need another entarnce to this area.
maybe something like the sniperwindows overlooking the last cp in steel, something to weaken reds presence