Most people do...
Giving her/it's armour (or just the arm cannon) to the other one to increase it's power?
Charging a ZeroLaser that will kill the SA-X in the blast?
What, don't leave us in suspense every page ^_^
Well, either the SA-X is absorbing the SA-X it just shot and will therefore become more powerful or, now that one SA-X has been reduced to a core it will try and infect Duo/Kraid and kill him from the inside out.
Of course that still doesn't mean Duo won't have control of the X-parasite Kraid clone...but seeing how those things reproduce via mitosis I can't say the same for the OTHER Kraid clones that may result. Huh, my money's on the first one because it's a little more straight forward.
they're doing something down there, hopefully it doesn't involve necrophilia.
The thought of that is just...*shudders*