20 is the forced cap on levelling for Fallout 3. It can be expanded to level 30 by purchasing the Broken Steel DLC. As for dealing with Deathclaws, get crafting the Dart Gun and immobilise them from afar.

No children can be directly killed in Fallout 3. I don't recall if there are children in Tenpenny Tower, but if you release the ghouls there, all the tower's inhabitants will be killed. The evil resolution at the end of Take it Back! will kill all Capital Wastelanders in the long term, aside from those who were born on vaults. You can also enslave children at the end of Those! and on Little Lamplight. At the Brotherhood of Steel Citadel, there's Arthur Maxson, who will probably be killed if you choose to blow up the Citadel at the end of Who Dares Wins (in the Broken Steel add-on) You monster.

Alright, after a lot of head scratching, researching dead forums and reading a lot of documentation, I finally reached the conclusion that the game version was not the issue when it came to VaultMP. It turns out that the Script Extender that came with VaultMP was for Fallout : New Vegas, and not Fallout 3. I needed to replaced New Vegas Script Extender with Fallout Script Extender. After I did that, the mod worked (sort of) and the error stated in the question disappeared.

I looked into the mod page to see if there were any Discussion Threads about this problem, and came across this text on the FAQ: Even on their official GitHub page, it claims the mod is for Fallout 3 only. You may find more readily-available support on this GitHub page though, as well as contact information for the mod author, though I suspect support will be limited, as the GitHub page clearly states in the Readme.md file that "This project is no longer being maintained." Sorry! Multiplayer on the creation engine is tough business, especially on the version for Fallout 3 and NV.

According to the Fallout 3 Wiki -- Somah (An NPC from the Mothership Zeta DLC) has a repair skill of 100. You may also look into Haley (An NPC from the Point Lookout DLC) who has a glitch that will eventually bring his repair skill up to 100. If you are just looking to repair your unique items up to 100%, look into Alien Epoxy, a semi-repeatably obtainable consumable that instantly restores between 15% and 30% condition to an item. (Also from the Mothership Zeta DLC)

Reverse pickpocketing a single frag mine did it, too. I know, I'm a jerk to kill Fawkes, but it was fun. Especially to hear him scream, "Run away!" Then he blew up.

According to the Fallout 3 wiki, it sounds like the only ramification is that all other Brotherhood Outcasts will become hostile (except those in Operation Anchorage), and you won't be able to do the repeating quest for them anymore (since the NPC you turn that quest in to is dead).

This problem has different solutions depending on how you want to play. If you're just looking for the achievement, one solution to your problem is to do whatever missions you want, choosing the side of good, until you get relatively close to your level point. Then go into a town and steal (for minor karmic reduction) or lay waste to entire towns (for major karmic reduction). You can quickly lower your karma this way. Then, once you're neutral, go kill some random creatures until you level. (If you're looking to steal, a good place to do it is at Dukov's place… he's got stuff everywhere.) The "nice" thing about this system is that if you stay on the path of "good" the whole time, you can do this at each achievement point: be bad until you get to the right karmic level, level up, get your achievement, and then restore a save to get back to your good self. You can quickly get "good", "neutral", and "evil" achievements for all levels on one playthrough this way. (I did this, because I don't really enjoy long-term playing as an evil character… but I do like my achievements!) You could also do this as an evil or neutral character, but it's much easier to quickly drop from "good" down to your new goal, than to work your way up. If you find that you're close to leveling, and you're at the right karmic level, and don't want to take a chance on changing your Karma by doing a story-type adventure, you can always go wandering looking for random bad people to take out. Going near the Washington Mall can get you some XP fairly quickly, and you can go inside the capitol building and clear out large areas without picking up any Karma, positive or negative.

Outside of Megaton, to the left behind where the saloon would be (facing in towards megaton) there is a 'hollowed out rock'. I don't think it shows on the pip boy, but if you move your cross hairs over it, it will say something like 'Open hollowed out rock'. There are 2 or three molerats around, at least at lower levels. Inside is some food, a note and a sniper rifle with some ammo. Can't remember if there was anything else there. edit: removed ascii map because I can't make it work check the fallout wiki here: http://fallout.wikia.com/wiki/Hollowed-out_rock_(Fallout_3)

No, there is no method in game for reducing the cost of merchant repairs. As you said, barter does not change the price that merchants repair for. You can increase the value of repairs offered by caravan merchants by investing in them using Uncle Roe in Canterbury Commons. Each stage of investments increases the repair skill of the merchant you invested in. Costs to repair will still be exorbitant, but they'll repair to a higher quality. As it stands, using merchants to repair your gear is almost always a worse deal than repairing the item yourself. The only exception would be using them to repair unique items that could not be maintained otherwise.

From what I can search, there are no mods which can be used to tag items used for crafting. If you haven't already, try searching NexusMods for item tagging, crafting or similar. You might have better luck in your search than I did. I can confirm, however, that there is no way to tag items for search in the base game. I can offer some advice regarding searching for these items, however: When you find one item used for crafting you can often find several other similar parts in the vicinity. For instance, near Springvale School you can find a motorcycle gas tank and motorcycle handle outside the school, used for crafting a Shishkebab sword. Nearby, at Super-Duper Mart you can find both a Steam Gauge Assembly and a Crutch in the building, which are parts of the Railway Rifle. It is not necessary to remember all parts used in crafting. If you can identify one part of a craftable weapon you'll often be able to find related parts scattered nearby.

In 'FalloutPrefs.ini': Under the [Grass] section: fGrassStartFadeDistance: the higher this number, the further away the grass will be drawn. A value of 18000 will set it to 5 cells, for example. Additional vegetative tweaks, in 'Fallout.ini': Under the [Grass] section: iMinGrassSize: decrease this value to improve the grass density. iMaxGrassTypesPerTexure (the misspelling is supposed to be there): increase this to get a wider variety of textures. Naturally, all improvements come at a performance cost. And, as always, be sure to create backups of your .ini files. Here is an overview of these values pertaining to Skyrim (the parameters work exactly the same, if I'm not mistaken).

There's a lot of incomplete information regarding armor degradation online and what I type here may be incorrect, but based on my research it seems likely. The biggest issue is the Fallout 3 modding wikia (Bethesda's GECK) does not have information regarding Damage to Armor. They have a page on the formula fDamageToArmorPercentage but it has no content. However, we know that Weapons break at a fixed rate per shot. For instance, Small Guns degrade at 3% of their weapon damage per shot, Big Guns degrade at 6%, Unarmed and Melee at 5% per attack, and Energy Weapons degrade at 4% per shot. Source Given the way weapon durability works in Fallout 3 and knowing there is a Damage To Armor Percentage value it is possible that Armor degrades in the same manner: a flat rate of degradation per attack. However, the default value for this variable is 0.350000, or 35%. Your character's armor does not lose 35% of it's health when you get hit so there is likely another formula we need to find. For reference, setting it to 0.00 means your armor will never degrade. What we can infer, but not confirm, is that armor degrades at the same rate regardless of the strength of the attack. In other words, your character will lose an equal amount of armor durability regardless if they're hit by a radroach or shot by a missile launcher. I am going to do more research on this and update this answer when I have more information.

You can use the player.removeperk console command — see a full list of IDs here. For instance, to remove your perks use the commands: player.removeperk 00069310 player.removeperk 0004494E Since the perks are to my knowledge only granted when leveling up, you have to use the reverse player.addperk command (see the IDs again) to "spend" your "regained" perk points.

Nope! Enemies only care about your footsteps, and how visible you are (which your pipboy's light affects). Just think of the Lone Wanderer as having Pip-boy earbuds!

tl;dr - The most evil things you can do: Take the Devil's Highway Perk (-2000 karma) Blow up Megaton (-1000 karma) Blow up the Citadel (-1000 karma) Infect Project Purity (-1000 karma) You'll notice none of those things are repeatable, however. If we use "donating purified water" as our baseline (+50 karma), repeatable actions that are at least as evil as giving away water is selfless: Giving away FEV modified purified water (-50) Giving Psycho to Paulie Cantelli in Rivet City (-100) Enslaving any character with the Mesmetron: (-100) Killing a non-evil character: (-100) This wiki page lists all actions you can take to affect your karma. The full list of negative karma actions and their associated karmic impact: Devour a corpse (Cannibal perk required): -1 Karma per corpse. Stealing from a non-evil character or faction: -5 Karma per instance (note that when stealing from owned (red text) containers, such as cabinets or lockers, the Karma change applies once per activation of that container. Meaning, if you open a container once and steal two items, you lose 5 Karma, but if you open the same container twice, stealing one item each time, you will lose 5 Karma each time, which means you lose 10 Karma). Items can be replaced in owned containers after being stolen, and then stolen again and again with the same Karma loss each time, making for a useful method by which console gamers can decrease their Karma, although repeatedly hacking an owned terminal is a faster way of doing this. Repeatedly hacking an owned (red text) terminal (Classified as stealing, but can be done over and over again) -5 Karma per hack attempt, NOTE, even accessing the terminal will result in negative Karma. Selling ears taken from the corpses of good characters (you killed) to Daniel Littlehorn via the Contract Killer perk: -10 Karma per ear. Killing a good creature: -25 Karma Giving away Aqua Pura with the modified FEV with Broken Steel installed, to beggar characters like Carlos outside of Rivet City: -50 Karma per item. Performing an evil action in a quest: At least -50 Karma Killing a non-evil character: -100 Karma (although, this can be gotten around by shooting them once, making them hostile, then letting a follower kill them.)(note) Giving Psycho to Paulie Cantelli in Rivet City: -100 Karma each time so long as he's alive. Enslaving any character with the Mesmetron: -100 Karma Causing Mister Lopez to commit suicide (either by pushing him or insulting him): -500 Karma Letting the feral ghouls into Tenpenny Tower in the Tenpenny Tower quest: -600 Karma Blowing up Megaton in The Power of the Atom quest: -1000 Karma Infecting Project Purity with the modified FEV in the Quest Take it Back!: -1000 Karma Blowing up the Citadel in Who Dares Wins in the Broken Steel add-on: -1000 Karma Taking the Devil's Highway perk in the Broken Steel add-on: -2000 Karma (essentially, it resets your Karma to the minimum -1000).

Take a look at Fallout Wanderer's Edition. It's probably the best regarded overhaul for the game, and should be tweakable to get whatever you happen to define as 'playing like an FPS'. If FWE doesn't float your boat, the Nexus is home to other overhauls that might suit your needs better, but FWE is the big one, and it's the one I'm familiar with. Oh, and don't use VATS, but that goes without saying.

This perk is acquired from Brotherhood of Steel: After gaining permission from Elder Lyons, speak to Paladin Gunny in the Bailey (Courtyard) of the Citadel. There is no charge or other requirement for training - the screen simply fades to black as Gunny begins teaching it. Once that's done, the Lone Wanderer may use any kind of power armor, including the Enclave and the Outcast variants. If having not asked for training on one's own, it will automatically be given at the end of The American Dream when becoming an honorary member of Lyons' Pride, however, these options appear very late in the main quest. (Wiki-Link)

To build the Shishkebab you need: Motorcycle gas tank, there are 5 located in the Minefield Motorcycle handbreake, again two are located in the Minefield ( Each is located near the burned out remains of a motorcycle, along with a motorcycle gas tank. One is on the east side of the Gillian house, and the other is on the southwest side of the Benson house.) Pilot light - can be taken from any oven - again check the Minefield or SuperDuperMart Lawnmower blade which again, can be find on (surprise, surprise) lawnmowers in the Minefield. In short: go to Minefield.

My best guess would be to try and alter some settings in the game. Go to the installationfolder of your game and locate the file FalloutPrefs.ini this file might be located in the submap Fallout3. Open this file with a texteditor such as notepad and find the following line and change its value bDoHighDynamicRange=0 to bDoHighDynamicRange=1 Try to start the game and exit the vault. If this doesn't work, you could try some other settings. For this you'll need to find the file Fallout_default.ini also located in the gamefolder. Find the following values and change them: Change bUseThreadedAI=0 to bUseThreadedAI=1 Change iNumHWThreads=2 to iNumHWThreads=1 If either of these options don't exist, you should add them in the [General] block of settings. What this will do: bDoHighDynamicRange turns on HDR. bUseThreadedAI determines if actors' behavior scripts can be split into multiple threads. This might improve performance* iNumHWThreads controls the number of threads the game uses in general. * *Link for more information > Fallout.ini (Gamebryo)