What’s good for someone is not necessarily good for someone else. This leads many to think that there is no such thing as objective Good or Evil.

However presumably each consciousness has the perception of what is good for itself. “This feels good and this feels bad, this feels right and this feels wrong” ...

So, objective Good could be characterized as the state where all consciousnesses are feeling good (or are feeling whatever they want to feel), and objective Evil the state where all consciousnesses are feeling bad (or are feeling whatever they don’t want to feel)

One objection could be that there are people who enjoy causing pain to others. But there are also people who enjoy pain. Those two groups can help one another feel the way they want.

There can be some who do seek feeling bad temporarily, for whatever reason ...

It could be conceived that there are individuals who enjoy doing things to others than no one enjoys enduring. But with the right technology or imagination, they could do these things without having to torture any other consciousness ...

Basically, it seems to me there can be a way in which every consciousness is fulfilled in its own way. And regarding the fact that we have to kill to live, well that might change in the future ...