Talk:Sentient Core/@comment-4978876-20180708083522/@comment-2601:681:8680:4F74:9D9F:6B39:E1B4:9B5-20181203003516

Funny, nobody read and try to answer your question. The answer to your question is: Both paths.

You need to improve your operator battle abilities by gaining focus (Madurai, Naramon, Zenurik, etc). You will need to unbind the passives so these abilities follow your operator as you can only have a single primary school of focus. You can achieve this by doing regular missions and gain focus for the active school you choose thru the lens that is equiped to your warframe or weapons. If you weave your game play doing POE and regular missions, you can use the Eidolon drops (Shards) to redeem focus points and use the Brilliant Shards to unbind your focus passives. FYI, I had Zenurik and Madurai completed before doing POE.

In Pain of Eidolon (pun intended), You will then need to get sentient cores to increase Quills standing in order to buy amp components and then buy operator and amp arcane blueprints (Virtuous are arcanes for amps, Magus are arcanes for operator) to improve your ability to battle the Eidolons as operator. You either has to just farm these sentient cores by killing these Vomvalysts at night or by hunting the Eidolons. I will suggest you just go and hunt the Eidolons because you can learn its moves, you should have enough sentient cores to level up your Quills standing to get a better amp (the sooner the better) to battle the Eidolon for real.

One final suggestion, get plenty of Energy, Health, and Ammo restores if you are going at it solo.

Good luck!