What do you make of Hebrews 2:14-15? Therefore, since the children share in flesh and blood, Jesus Himself likewise also partook of the same, that through death He might render powerless him who had the power of death, that is, the devil, and might free those who through fear of death were subject to slavery all their lives.
Also, the protoevangelium, the first gospel, says that the seed of woman will strike the head of the serpent, but the serpent will strike his heal. The first gospel depicts the cross as a conflict between Jesus and Satan.
For a better understanding of the Christus Victor position, read this quotation from Augustine:
It is not then difficult to see that the
devil was conquered, when he who was slain by Him rose again. It is something more, and more profound of comprehension, to see that the
devil was conquered when he thought himself to have conquered, that is, when Christ was slain. For then that blood, since it was His who had no
sin at all, was poured out for the remission of our
sins;
that, because the devil deservedly held those whom, as guilty of sin, he bound by the condition of death, he might deservedly loose them through Him, whom, as guilty of no sin, the punishment of death undeservedly affected. The strong man was conquered by this righteousness, and bound with this chain, that his vessels might be spoiled, which with himself and his
angels had been vessels of
wrath while with him, and might be turned into vessels of mercy.
[1]
[1] Augustine. De Trinity. Book 13, Chapter 15.