So how do we please this master of disguise? Simple, do just about anything! Whereas most companions have one set day-to-day activity that grants you affinity with them, Deacon likes it when you hack computer terminals, pick locks, and be nice to people who deserve it. Coupled with other stealth perks, this bonus can result in a total of 5.3x bonus sneak attack damage. Here's the twist: do we actually care when he is basically giving away free stealth damage? Deacon's perk "Cloak & Dagger" offers players a permanent +20% sneak attack damage and +40% increase on the effect duration of Stealth Boys. This likely stems from his shady nature - we don't know exactly who or what he is, and why he does things. The companion associated with the faction, Deacon, might be the most easily pleased companion in the entire game. If you've been wanting to start collecting companion perks in Fallout 4 but aren't sure where to start, you'll want to join the Railroad. These usually come into play when completing faction quests. On top of day-to-day activities, certain game changing actions will largely affect some characters' affinity.
MacCready, for example, will do just about anything if there's good money involved. So, how do you reach maximum affinity with companions? Do the things they like! Most companions have a code of ethics that they'd like you to follow.
These companion perks are often extremely powerful and well worth the time required to earn them. Once the player character reaches maximum affinity with any companion, they are granted a unique perk that cannot be acquired anywhere else in the game.