Characters who are dead:
Skipper, Muta, Hans, and most of the rest of the gang
Characters who are not dead:
Chiko, Ken, Twenty Faces
Characters who should be dead, but we didn't see the body so they'll be back after the time skip:
Angie and Tiger
Maybe Muta didn't have to take the bullet for Chiko, but he would have made it anyways. Best case scenario, by the time the got to a train station, and then to a hospital, the tourniquet would have cut off all blood to his leg, and he'd need it amputated above the knee. If the tourniquet didn't stop the bleeding, he'd have died slowly on the train.
Meanwhile, Skipper got shot in the back, and then just pulled some ridiculous shit. Ridiculously GAR.