Fallout 4 exploits

Using the console
By using the "tcl" command in the console while building, you can make your structures  clipping. This can eliminate the gapping in your walls or lower structures into the ground etc. If you place an object while in tcl-mode it becomes "clipp-able" for other structures. You can also pick up structures and fly below the surface where you want to place them. By keeping the structure close to your character, it may follow you under the surface while still being placeable. Using the "tgm" command while building automatically gives you 999 of every crafting item, and unlocks settlement items that may be restricted by perks, meaning you can effectively build everything.

Menu-, HUD-, inventory-, and radio-related exploits

 * The game allows saving during npc dialogs which makes it easy to reload the game and retry any option which may influence caps, experience, etc. outcome when talking.

Physics engine glitches

 * Sometimes VATS will end and seem like the target was missed, but then 2 seconds later the bullet hits. This was tested multiple times at point blank and ranged VATS. The target can be used as a meat shield while the bullet is "frozen"

Infinite XP
After reaching The Prydwen and completing the Fort Strong quest, speak to Proctor Teagan (Weapons Merchant) on the Prydwen. Ask him about extra work and he will give you a mission acquiring crops from the citizens of the Commonwealth. The first location will be a random settlement (Tenpines Bluff and Sommerville Place confirmed) and after completion will award around 100 caps and 125 XP. Asking for extra work again will give you the exact same quest as before, convincing the same settlement to contribute crops. Repeat for unlimited XP and Caps.

After reaching the Brotherhood of Steel's Prydwen, you can go up to Proctor Quinlan and ask to do a scribe escort. After he gives you the quest, you can head out to the flight deck (Where you can see an area near a couple of barrels) and you can kill the scribe in secrecy. Once this is done you can return back to him, saying the scribe died, and it will award you with XP and caps still.

Non-player character-specific exploits

 * Dogmeat is able to fetch a variety of items:
 * The Cryolator which normally requires lock picking
 * Multiple issues of You're SPECIAL! allowing the character to max out his stats.
 * The same exploit performed to duplicate the You're SPECIAL! book will also duplicate other items. Armor however is near impossible to duplicate this way because he simply grabs near the beginning of his animation giving you little chance to grab it before he does.


 * It is possible to have 3 companions by meeting X6 88 to hunt the rogue then simply not going to the targets location he will follow you as a 3rd companion anywhere you go however he will fight with BoS and other various allies, Travis the radio dj can become a permanent follower the same way giving you 3 companions to change their gear drop weapons or armor and have them walk over it they will pick it up rarely.

Gameplay exploits
Sentry Tower

-A exploit used in order to keep a impossible to breach defense. Build a high stairway above your base and place several sentries. then scrap all wood and the sentries will stay afloat, whenever the base is attacked the sentries will have a 360° view of the base.