Dead by Daylight

This is one of DBD's adept perks. They all involve escaping a match with a character using only that character's perks. In this case, the character is Alan, and the perks are Champion of Light, Deadline, and Boon: Illumination.

In terms of loadout, you can find Alan's perks by using the Perk Search function with his name. You must not run a fourth perk. While Champion of Light is only useful with a flashlight, I don't think a flashlight is necessary for this achievement. You may have better luck trying to survive with another option. Toolboxes might help you get out faster, Medkits might let you heal, or a key might help you get out, in descending order of how useful I think they are.

In terms of gameplay, save Boon: Illumination for the last two gens, or if you need to find a chest for an item. I know, it's tempting, but the less the killer realizes there are boons, the less likely they are to get stomped. That boon might help your team break up a three gen. Don't go for crazy flashlight saves unless you're very confident, as they just put you in danger, Champion's effects be darned. And try not to stay injured to get benefit from Deadline. It really gets more benefit from specialized builds. Just keep your head down, do gens, rescue people on hooks, heal others, and don't linger near the gate at the end.

Eventually, regardless of your skill, you'll get a friendly or AFK killer and get the achievement. These tips are only designed to give you a better chance of getting it fast against a killer who truly wants to play. Even then, a lot of it is luck, looping and stealth skill, and game sense. Best of luck.

TL;DR: Ignore Alan's perks except for the boon, save that for late game, and just try to have good game sense.