The Forsaken Temple - Stone-Smith (90s lodestone repair) Cheesed

This is a guide I made because I couldn't find how to do this challenge in this guide section.
(Though I did find it later)
In this guide I will show how I got the Stone-Smith achievement solo.
First some things to note. The challenge timer only starts when you throw in the first piece so you are free to take as long as you want until then, furthermore enemies don't spawn until you interact with either a lodestone piece or an aligning mechanism. Therefore you are free to explore and try to find whatever way you like to access the aligning mechanisms.

I found a simple 2 teleport path for Sienna which may or may not be how it was intended to do this, so if you don't want to use it feel free to stop reading this guide and look for a path better suited to you.

Dropping down into the room go along the left wall past the aligning mechanism into the first alcove with the windowsill. Teleport onto it like so.
I crouched and moved forward into the left corner until I lined up my next teleport like this.
This lineup will teleport you above with the aligning mechanism left and 1 lodestone piece in front

Interacting with the aligning mechanism or the lodestone piece will start the monster spawns. from here you want to use the alignment mechanism to open up the ladder opposite you.
This gives you access to the other aligning mechanism and thus all 4 pieces. Kill or ignore all the enemies and gather up all the pieces near the broken lodestone.
Then just toss em all on there and enjoy your completed achievement.

If you like videos better here's a video with a single teleport route I found in a more general Okri's challenge guide by !ChadMasodin.