Don't forget that Sollux is still alive and stuff. Lets do a count of live trolls shall we?
-Karkat (Probably the longest survivor.)
-Terezi (Probably next to go.)
-Equius (Maybe dead.)
-Nepeta (Maybe dead.)
-Vriska (God tier.)
-Aradia (God tier.)
-Sollux (KO'd.)
-Eridan (Gonna get raped by Jack.)
-Gamezee (Dark Carnival bitch.)
A maximum of 9/12 trolls are still alive. Unless I'm forgetting someone...