I havent found anything that last any length of time agaisnt mulga , mallee or any decent seasoned hardwood here .. theres a really good reason that those woods were used by the Aborignals to make their wear weaponry .. you can put a decent cutting edge on the weapons made from them , and go kill each other very effectively .
I look for a knife thatll hold an edge when skinning stuff in sorta adverse conditions , like sheep / goat / roo thats been in a sandstorm .. not the stereotypical bushcraft test .. but a thing that I ran into a bit living in the bush was sand loaded pelts wrecking blade edges ..
Its nice if the geometry allows for stuff like feather sticks , or shredding tinder / kindling to make fire lighting easy .. but is also robust enough to allow for batoning .. not so much as in batoning to split sawn lumps of firewood .. but for tasks like getting witchety grubs out of tree trucks and roots .. I likes my treats
A good patina or just corrsion resistance is a bonus .. blood and water / fish muck have a way of making a blade mark up and rust .. not a biggie till it affects the actual cutting edge .. but then ts damned annoying ..
When bad things happen .. its a big big bonus to have an edge that deforms rather than chips out .. you can straighten an edge easy enough to make it useable again if it deforms ... but chips are a pita .. and not so easy to fix on the go .
To work out what *you* need .. youre likely going to have to go spend some time doing what you do ... and take note of what gives you problems , what works well , and go from there .. I know a lot of the usual blade tests are fun , but they dont tell me much about stuff I want to know or that applies to me and what I actually do .