There can be no question of holding forth on ethics. I have seen people behave badly with great morality and I note every day that integrity has no need of rules. There is but one moral code that the absurd man can accept, the one that is not separated from God: the one that is dictated.
How should the absurd man live? Clearly, no ethical rules apply, as they are all based on higher powers or on justification. "Integrity has no need of rules. 'Everything is permitted' is not an outburst of relief or of joy, but rather a bitter acknowledgement of a fact." From Wikipedia