Last time I opened my third eye I wanted to burn everything to ashes, I live in a city for now, so everything is disgusting (from an astral POV).
I just keep it shut, maybe even calcify the pineal gland on purpose sometimes so I dont have to deal with it, but thats just me.
As for “weapons out”, its not really a battle, they arent exactly “warrior entities”.
Dark servitor is too overpowered, careful with that thing lol, that one even scared me , and trust me I have experience with “demonic” beings, the dark servitors presence alone made my room cold in the hot summer lol.
Angels would work better yes, angels love smiting low vibrational beings, especially the parasitic ones.
But its best that you also ask them to teach you how to kill parasites.
Most people prefer shielding, you can do that aswell, works much better and faster, but I prefer killing them, atleast that way there is “one less” to worry about.