Show No Mercy

Show No Mercy is a Brotherhood of Steel main quest in Fallout 4.

Detailed walkthrough
Meet Elder Maxson on the flight deck for your first mission as a Brotherhood Knight after familiarizing yourself with the Prydwen and the crew.

You're to head out to Fort Strong to cleanse it of all hostile super mutant forces and secure the armory which will give the Brotherhood an advantage in the upcoming war.

Step onto the Vertibird and man the minigun. Use this weapon to cut down the super mutant behemoth roaming the grounds (you can also use the minigun to kill any remaining super mutants after it lands).

Disembark and remove all indicated super mutant threats then enter Fort Strong's armory and exterminate all hostiles on all floors in this location.

Talk to Paladin Danse, who decides to stay and make sure the armory is secure (you can also pass a medium speech check and ask why he hates super mutants so much) before returning to the Prydwen for a reward from Elder Maxson of Vertibird signal grenades.


 * Note: When given the option to do the medium speech check, if you instead decide to outright agree with Danse, you will earn his respect and raise your relationship level instead.

The option to purchase extra signal grenades from Proctor Teagan is unlocked.