victor makes several references to his destiny in this chapter. what does he believes his destiny to be?

The secret of the creature's existence is becoming too much for Victor to bear; he accuses himself of murder (albeit while in a semiconscious state) and tells his father that there is a nightmarish destiny which he has yet to fulfill. Victor longs to supercede the barrier of secrecy that has been erected between him and the rest of humanity. Here, we can see that he has forsaken his former selfishness: though he often longs for death, he forces himself to overcome this self-serving impulse in the hopes of keeping his surviving family from harm.