XP in Fallout 4 is essential for leveling up and enhancing your stats and abilities in the wasteland of the Commonwealth. Earning XP and leveling up can be time-consuming, requiring significant Major Actions such as unlocking doors, defeating enemies, and, most importantly, completing quests.

Fallout 4 features 144 quests, excluding DLC content. These include essential main story quests, faction-related missions, and optional side quests. Below is a list of the most entertaining and rewarding side quests, offering significant XP and valuable gear to enhance your gameplay.

10 The Minutemen

60+ - 300+ XP Per Side Quest

Assisting the Minutemen in Fallout 4 and building settlements yields significant XP through both main and side quests. Each Minutemen side quest offers 60 to 300+ XP and various rewards. Completing these quests can rapidly accumulate thousands of XP while also gaining settlements that provide new areas for building, customizing bases, and trading resources.

The 'Out of Fire' side quest is a rewarding Minutemen mission in Fallout 4, given to you by either companion character Preston Garvey, Abraham Finch, or Radio Freedom. The quest involves assisting Finch Farm, which is experiencing trouble and requires Minutemen's . You must retrieve an heirloom sword from the Forged gang at Saugus Ironworks and attempt to reunite Jake with his family at Finch Farm.

After clearing Saugus Ironworks and saving Jake during a tense reunion at Finch Farm, you receive the 300+ XP and the Shishekebab sword, along with 250 Caps (+100 bonus Caps) as thanks. The farm will thereafter become one of the best player settlements, enabling trade access.

If Jake is killed, you retain the sword and receive XP, but you forfeit the bonus Caps.

9 The Brotherhood Of Steel

200+ - 350+ Per Side Quest

ing the Brotherhood Recon team in Fallout 4 offers a plethora of main and side quests, each rewarding substantial XP. Side quests provide between 200+ and 350+ XP. Notably, 'A Loose End' and 'Duty or Dishonor,' issued by Lancer Captain Kells, each yield over 300 XP and a piece of T-60c Power Armor.

ing the BoS allows access to Scribe Haylen and Knight Rhys, who offer simple, overlapping quests for scouting and combat. These tasks provide significant XP rewards for multiple activities simultaneously.

'The Lost Patrol' gives the highest XP and rewards from the Brotherhood side quests. Commanded either by Paladin Danse, another companion in Fallout 4, or Lancer Captain Kells, you must follow distress signals to recover Holotapes from fallen Brotherhood soldiers, leading to a meeting with the last survivor, Paladin Brandis.

Convincing Brandis to re the Brotherhood of Steel maximizes your rewards, giving you Survivor's Special, a unique laser pistol that deals increased damage as your health decreases, offering a saving grace in critical combat scenarios.

8 Diamond City Blues

400+ XP

Diamond City, a major fortified settlement in Fallout 4, is a hub for numerous side quests offering substantial XP and rewards. Explore Diamond City Market and nearby residences, engaging with NPCs to discover available quests. One notable side quest, 'Diamond City Blues,' is particularly beneficial for players who use Chems to boost combat performance.

Start the quest by visiting Colonial Taphouse in the city, where you'll help Paul Pembroke confront barkeeper Henry Cooke and then intercept a drug deal to access a Chem lab. When infiltrating the lab at the Four Leaf fishpacking plant, you will find 60 of the best Chems in Fallout 4: Buffout, Jet, Psycho, and Mentats, which you can take as a reward.

By ing a Speech Check, you can demand and receive 80 Caps from Paul Pembroke for your assistance in this quest.

If Paul is present during the heist, he suggests a 50-50 split, but you can negotiate up to a 100-0 split through persuasion, which may affect your relationship with him. If Nelson is killed during the heist, you can also claim 800-1000 Caps from him, which is included in the reward split.

Regardless of the variable outcomes and interactions with NPCs, completing the 'Diamond City Blues' quest awards 400+ XP. This quest, pivotal for players who frequently use Chems, which are costly and rare in the wasteland, is valuable despite its complexity and length. The details of the reward split are outlined in the table below:

7 The Secret Of Cabot House

300+ XP

'The Secret of Cabot House' is a rewarding quest where, after rescuing Jack Cabot's sister, you must prevent raiders from freeing Lorenzo Cabot, the head of the Cabot family, imprisoned at Parsons State Insane Asylum. This quest offers a fantastic reward and XP.

If you kill Lorenzo, Jack Cabot rewards you with 500 Caps, 300+ XP, and Lorenzo's Artifact Gun, which stuns enemies, knocks them back, and deals explosion and radiation damage. Alternatively, freeing Lorenzo grants you a 'lifetime supply' of mysterious serum, bestowing you with +Strength, +50 Damage Resistance, and -36,000 Radiation.

You can only receive one serum vial at a time from Lorenzo, and it cannot be sold or traded. This choice does not award quest XP, therefore less beneficial than Jack's alternative reward.

6 The Big Dig

300+ XP

'The Big Dig' is an essential side quest for recruiting one of Fallout 4's best companions. Initiated by speaking with Bobbi No-Nose in Goodneighbor, the quest features multiple endings, each affecting your rewards. Choose wisely to ensure your preferred outcome.

You initially assist Bobbi in a heist to tunnel into Goodneighbor's mayor, John Hancock's office, leading to a confrontation where you can either side with Bobbi or betray her. Persuading Bobbi to leave or betraying her awards you with the legendary Ashmaker Minigun with incendiary bullets, and Hancock becomes available as a companion. Alternatively, siding with Hancock yields a mere 300 Caps. Either choice grants 300+ XP, but the former is more invaluable for your playthrough.

5 Devil's Due

400+ XP

The 'Devil's Due' side quest offers substantial XP and numerous rewards. To start, talk to a guard in Fallout 4's Diamond City about odd occurrences at the Museum of Witchcraft, which triggers a preliminary quest to explore the museum. Finding Private Hart's holotape in the museum leads to discovering a Pristine Deathclaw egg, which you must pick up and decide its fate.

If you deliver the egg to a Mister Handy named Wellingham in Diamond City, you'll receive 200 Caps, potentially increasing to 500 Caps with successful Persuasion Checks. You will also receive Wellingham's Recipe Note for Deathclaw Wellingham, a consumable that boosts healing by 0.03 for two hours, providing +115 Hit Points.

Returning the egg to its nest west of Parsons Creamery leads to a peaceful encounter with a friendly Deathclaw and grants you a valuable Deathclaw Gauntlet. While this option forgoes the Caps reward, it benefits melee players, offering a useful and valuable item over a consumable that cannot be crafted again.

4 Trip To The Stars

450+ XP

Available through the Nuka-World DLC, 'Trip To The Stars' is a unique side quest that brings a sci-fi element to the post-apocalyptic world of Fallout 4. Players Dara Hubbell, the leader of the Hubologists, to clear the Nuka-World junkyard of hostile robots, earning one of the most powerful weapons and substantial XP.

In doing so, Dara will reward you with Hub's Alien Blaster and its ammo, a unique version of the Alien Blaster with the legendary weapon effect: Critical shots deal double damage, and the critical meter fills 15% faster. You will also receive 450+ XP and various Caps, ranging from 200 to 350. Father on YouTube provides a breakdown of both endings in the 'Trip to the Stars' quest, helping you to make an informed decision.

3 The Silver Shroud

450+ XP

'The Silver Shroud' is a captivating side quest in Fallout 4 that offers unique accessories and gear, along with high XP and a substantial amount of Caps. You can start this quest by tuning into the Silver Shroud Radio near Goodneighbor or talking to Kent Connolly at the Memory Den's radio station.

You are tasked with retrieving the Silver Shroud Costume from a mannequin on the top floor of the Feral Ghoul-infested Hubris Comics building. Once you secure the costume, please return it to Kent Connolly at the Memory Den to receive your agreed-upon rewards and gain XP.

On the other floors within the building, additional memorabilia items can be retrieved for bonus rewards, including extra Caps when returned to Kent.

After retrieving the Silver Shroud costume, Kent offers to modify it so you can wear it yourself. Donning the Silver Shroud armor boosts your Agility and Perception by +1 each and reduces damage from human enemies by 15%. Additionally, becoming a Silver Shroud unlocks exclusive dialogue options in Fallout 4, allowing you to "Speak as the Shroud," adding a fun and mysterious element to your gameplay.

2 Last Voyage of the USS Constitution

450+ XP

For another engaging and fairly bizarre quest in Fallout 4 that offers excellent rewards and XP, start the 'Last Voyage of the USS Constitution.' You will be enlisted by Ironsides, a sentry bot captain, to help him and his robot crew return the USS Constitution to the ocean.

While aboard the ship, you must defend it from attacking Scavengers. ing Captain Ironsides grants you 450+ XP and notable rewards, including the Broadcaster, a portable naval cannon. Alternatively, siding with the Scavengers yields an extra 500 Caps, but you miss out on the more unique and valuable rewards. Charlatan Wonder provides a visual guide on how to get the optimal rewards.

1 Brain Dead

600+ XP

In Fallout 4's Far Harbor DLC, the 'Brain Dead' stands out for earning one of the highest XP rewards from a single quest. While it doesn't offer notable gear, you receive a substantial amount of Caps, providing the flexibility to purchase desired items post-completion. Additionally, this quest is celebrated for its quirky and enjoyable gameplay experience.

To initiate the quest, head to Vault 118, where a Mister Handy named Maxwell will guide you to a crime scene guarded by Protectors, and you'll be enlisted to investigate a peculiar robot murder. Completing Part 1 of the quest earns you 400+ XP while solving the murder in Part 2 grants an additional 300+ XP, totaling over 600 XP.

You also collect between 200 and 1270 Pre-War Money, which can be exchanged with vendors for Bottle Caps in Fallout 4, equating to 1600 to 10,160 Caps. This quest is extremely rewarding in of both experience and financial rewards.

Source: Father/YouTube, Charlatan Wonder/YouTube