When you reach 150 dwellers, you can activate factions.

The first can be activated free.

2nd you must do one mission, 3rd - 5 mission... then 10, 30,50, 100 etc...

You can activate much factions as you want, but it becomes more difficult.

Because everyone know the location of your vault, enclave start attacking with robots, their robots are stronger than deathclaw. And mutants also attack, when they knock someone, grabbed him and began to flee from the vault. If they manage to escape, dweller is lost forever.

Alien technology mission: find a piece of alien technology in wasteland.

After this, equipment beyond legendary is activated. Even more powerful weapons and outfits with 12 stats points.

Of course, they are harder to find than legendary versions.

Crimson Caravan mission: Give them 1,000 units of water.

You can put one item on their list. When send dwellers to wasteland, chance to find this item is far greater. But if you find it, you have to pay for it in caps.

Enclave mission: Survive three consecutive robots attacks.

You get access to Vertibird. Now you're coming back from the wasteland, three times faster than usual.

FEV mission: survive mutants attack.

You get access to FEV room. What happens if you put dwelers here.

Most likely - they will turn into a ghoul. This is as well as cockroaches Incident or mole rat. They will spread to vault till kill anyone or you kill them.

Likely to happen - they will turn into a super mutant and **** happened

Least likely - they will turn into a super mutant, but they will preserve intelligence.

If the last option happens, they remain in vault as protectors. Super mutant can only be in FEV and door room or in wasteland. His stat are 15 15 15 15 15 15 15. They dont need purified water, but consumes three times more food than human.

New Vegas mission: dweller must be in wasteland 15 days to find a city.

You get casino room, is produces caps.

Intelligent deathclaw mission: kill 100 deathclaw in wasteland or in vault.

You gain access to deathclaw, one per flor and it cost 300,000 caps 1,000 food 1,000 wather.

They akt just as protector, can't work or go to wasteland.

Nuka-Cola Quantum mission: collect 5,000 food and water from Nuka-Cola room.

Now you can build Nuka-Cola Quantum room. When consumed Nuka-Cola Quantum is acts as stimpak and radaway.

Think Tank mission: Give them 5,000 units of electricity

You can send one dweler with a maximum stats points. They will return it as a "brain in a jar". This robotic brain has intelligence 30, but everything else is 0.

NCR Mission: send 10 dweller (level 30+) to become Rangers. (and never return)

Wasteland is divided into zones: 0-6 hours of exploring is first zone. 6-12 second and so on...

Now you can create outpost, every outpost means a 10% chance, that Rangers kill a creature that you encounter in their wasteland zone. Maximum number of outposts per zone is five and you must have same or a larger number of outposts then in previous zone. This means before you make third outpost in the eighth zone, you must have three outposts in the first seven zones.

How to create outpost? Send 5 dweller (level 30+) and they form it (and never return)

Vault-Tec mission: Do NOT stop each of the three incidents.

Every day there is a 30% chance to get location of the vault. To get to the vault, dweller has to spend three days in wasteland. He will not collect anything during this process, mission is to reach the vault. In vault he will find one legendary item. Rarely 2 or 3 and very ultra super rarely, a piece of advanced technology, which will allow you to upgrade ONE room to level 4.

Door room level 4 have turrets.

Vault city Mission: explore wasteland 300 hours for them. You can use several different dweller for this. Now you can you produce items for one use:

Land mines - they hurting anyone who attacks the vault before they enter.

Fire protection system - It requires 300 units of water.

Trap for cockroaches - It requires 300 units of food.

Mini nuke - it will stop anyone who attacks the vault before they enter. Requires uranium, can be found in wasteland as a rare item.

Brotherhood of steel mission: I ran out of ideas.

You get the room in which you can turn, common in the same version of rare and rare in the same version of the legendary equipment. If you use one piece of equipment, the chances of success were 1%. Hundred pieces give a chance 100%.

If you have unwanted equipment you can to disassemble it: weapons in scrap metal and outfit in cloth. In this case, 10 pieces of scrap metal give 1% chance to get a rare weapon. Same applies for rare scrap metal to legendary weapon.

Gizmo mission: I ran out of ideas.

You get gambling room, here you can risk your 999.999 caps, for a chance to get some gear.

Bet 1000 cap for:

10% chance common item

1% chance rare item

0,1% chance legendary item

0,001% Alien item, if it is unlocked.

Wasteland Trader sell 10 random item. Offer reset once a day. But raiders attack more often.

G.E.C.K. production of food and water is doubled. But fourth incident becomes possible. Parasites will spread through the vault and do not leave room until you destroyed them.

Hoover Dam Electricity production is doubled. But brotherhood of steel begins to attack vault. They are like raiders, with power armor and badass weapons.