The only person's fate in question was Dr. Rosen (cause he has a movie career, but then again he had one before the first season, it was more of a failsafe if he declined to return or if their budget was cut and couldn't afford him). Everyone else should've been fine.
But Rosen totally survived and developed some powers and god fucking dammit why did Heroes get 4 fucking seasons and Alphas only got 2. ALPHAS WAS HEROES DONE RIGHT, DAMMIT