The primary Ukrainian challenge (just an armchair opinion) in this conflict, and particularly with counter offenses, is going to be the preservation of life while still trying to push Russia out. They simply have such a population disadvantage that Russia can afford a massive variety of stupid mistakes and still have advantage. Normally in war you could counter this with more guerilla, more lopsided, more 'underhanded' (what does that even mean in a war where Russia is committing atrocities daily) tactics. But I have a feeling a ton of the weapons and intel being supplied to Ukraine comes with stipulations that restrict almost all of these options.
I wish nothing but the best for them, I hope they can protect their country and their people.