Is Mr Sinister strong?
Superhuman Strength: Mister Sinister possesses superhuman strength, which may be a product of his shape-shifting abilities. Sinister is able to press lift within the 2 to 10 ton range, maybe even more, but he can also access his telekinesis to enhance his physical strength to more powerful levels.
Who kills apocalypse?
Ultimately, Jean was able to physically rip Apocalypse from Summers' body using her mental powers, and
Cable destroyed Apocalypse's essence with his own telepathic powers. However, Apocalypse did not die, but managed to regenerate in a tomb in Akkaba.