I was using nidus and the enemys were dead before they could attack the excavator, the problem was when i had to get those energy cells the excavator was unprotected, its true that a defensive frame whould have helped a lot.
Obviously i prioritized the ancients and nullifiers whenever possible, but there were almost always 4-5 on top of eachother, protecting each others shield generator at the top. So it took too much time to deal with them just for 1 energy cell, by then the excavator was already dead. Again, a defensive frame would have helped.
Problem is, i currently dont have a good build defensive frame. So i think its sad that just because i dont have that i cant do that mission. It was the only axi relic mission at that time, i would have needed to wait an hour for new ones.
Still, i opened 2 relics, but no extraction point showed up. So thats kinda the thing that frustrated me the most.
I was doing it solo because i didnt want a team that would want to run 20+ excavators, ofc its completely doable in a team. Just wanted to open one relic.