Death to a Solipsist

Death

 The person dies, but the solipsist himself is not dead. If somebody else dies, the supposed being who has supposedly "died" is only a phantom of the solipsist's imagination anyway, and the elimination of that phantom proves nothing.

 For the solipsist, death can only ever be "the death of the other". He/she never believed in the existence of those other solipsists in the first place.

 Because they were illusions to begin with. A character can be imagined but when they are not being imagined it's like they died—until they are imagined again. In the same sense an illusion can die and live after death in the same way that an image of imagination can be re-imagined