This is one of the more complicated achievements in the game and starts with the main quest "Pirate Radio". Note you will need a PERSUADE skill of 55 to make this work.
1) Speak with Nyoka at Stellar Bay and do her quest "Passion Pills".
2) Collect Nyoka as a companion and she takes you to Devil's Peak Station where you meet the Information Broker (Hiram Blythe)
3) Blythe asks you to stop the MSI and the Iconoclast broadcasts.
4) Head to Amber Heights and speak with Graham and the Iconoclasts first.
5) He will assign you the quest "The Commuter". You will have the choice of collecting cartridges (for Graham) or extra supplies (for Zora). You MUST choose supplies for Zora.
6) After returning to Graham he will assign you the quest "Pay for the Printer". Before heading out Zora will ask you to retrieve her team (the Van Noys). You MUST help the Van Noys get back to Amber Heights by getting them the Trauma Kit. Graham will now stop the broadcasts.
7) If you have satisfied Zora's requests in "The Commuter" and "Pay for the Printer", she will give you the quest "Sucker Bait" which you must complete and report back to Zora.
8) Speak to Sanjar in Stellar Bay and get the quest "BOLT With His Name". Complete this quest and delete the data on the ARMS Terminal (must delete the data). Report back to Sanjar.
9) Sanjar will now assign you the quest "Errors Unseen", complete this quest and return to Sanjar. Sanjar will now stop the MSI broadcasts.
10) Return to Hiram Blythe and jump start the Tower.
11) Start Candid's Cradle quest when the UDL ship crashes. Collect the Targeting module.
12) SAVE THE GAME SO YOU CAN GET THE "MONARCH ABIDES" ACHIEVEMENT FROM THIS SAVE.
13) Talk to Zora, she overthrows Graham and becomes leader of the Iconoclasts. With a persuade of 55 she will agree to talk to Sanjar about peace.
14) Visit Sanjar in Stellar Bay and ask him to consider peace with Zora and the Iconoclasts.
15) Sanjar will insist on seeing Zora's executive review before he talks to her.
16) Collect Zora's executive review from a safe in Rizzo's bar in Cascadia (east side of the river)
17) Return to Sanjar and he will agree to meet Zora in a church outside Stellar Bay.
18) Arbitrate the peace between them for the achievement.
Credit to SilverFox for their
guide.