Thank you to everyone who contributed to this reference!

Factions are a huge part of this game. And, unfortunately, they are overlooked by most people since the game speeds you through levels. But there are some unique treasures to be had! WHAT FOLLOWS CONTAINS MANY SPOILERS!

Reputation tiers (positive values only) :

• 00-10 --> Neutral
  
• 11-25 --> Valued
  
• 26-50 --> Respected
  
• 51-75 --> Trusted
  
• 76-100 -> Ally

** Agrigen:

• (3) Nibbler Bar [One-time consumable, 20% Heal, chance for debuff]
  
• (6) Nutrient Broth [Permanent until death; +5% xp boost || +10% acc, dmg, -OR- crit (based on color of broth)]
  
• (9) Emojion Siphon [(Re)usable on AIs, +5% dmg, acc, dodge until end of mission]

** Anulap:

• (3) Bloodhound.exe [one-time consumable, show hostiles on map]
  
• (6) Sniffer.exe [one-time consumable, show mission objective on map]
  
• (10) Five-star auctionable item [requires Trusted with UFP]

** Horizon:

• (3) Cash credit
  
• (5) Instant drone killer [one-time combat consumable]
  
• (6) Repair UFP rep

** Boomslang:

• (3) Grenades
  
• (6) Armor [random, blue base]
  
• (6) Weapon [random, blue base]
  
• (9) At ally, you can order a custom shotgun; choice of base type and name.

** Chimera:

• (3) Replacement Monitor device
  
• (3) CureAll drug
  
• (6) Biofeedback Regulator [Accessory, activates in missions; +10% dmg, crit || +5% dodge, acc, crit res, dmg res || Possible explosive vomiting on mission end]
  
• (10) Chimera Serum X [Permanent until death; +5% dmg, dodge, crit, acc, crit res, dmg res, xp boost]
  
• Must be neutral or below with Jiyin for serum and monitor options.

** Emer LT:

• (3) Emer LT rifle enhancement [+4% acc, crit; requires rifle]
  
• (6) Rifle [random, blue base]
  
• (10) Emer LT soldier [One-time consumable; hireling joins party for mission]

** Rhyzohm:

• (3) Server Locator [One-time consumable, show server room on map]
  
• (6) FTL Com Scrambler [One-time consumable, negate rep loss from mission, doesn't affect stealing]
  
• (10) Skeleton Key [Provides access to server rooms]
  
• (10) Master Key [At ally, provides access to server rooms with admin privileges]
  
• Nothing usable in UFP territory.

** Titan:

• (1) Worm Slime Cleanser and Lubricant [One-time consumable]
  
• (5) DIY Exoskeleton kit [10% dodge; -35 TU penalty; requires Heavy Armor]
  
• (10) Epic Titan Armor
  
• Contact is... stubborn to open conversation, but available at Valued like others.

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** Astrohund:

• (1) Astrohund Kill Switch [one-time constumable, self-destruct an Astrohund drone]
  (3) Ship Surveyor [Reveal map layout, only works on ships]
  
• (3) Terminal Pinger [Reveal ship control terminals on map]
  
• (6) Suite of green equipment
  
• Used in a Ragnarok quest for a legendary weapon (lvl 60 variant[i.imgur.com]) .

** Aurora:

• (3) Aurora access badge [one-time consumable, access (story) Aurora doors]
  
• (6) Aurora drone override [one-time consumable, self-destruct an Aurora drone]
  
• (10) Stella Marin Security Override [one-time consumable, disable (story) mission security]

** Dablue Yutaki:

• (1) Holo Disc [one-time combat consumable, AoE taunt hologram]
  
• (6) Equipment Loadout [customizable suite of purple weapon, armor, shield ]
  
• (9) At ally, gain an accessory[i.imgur.com] to summon a black hole 1x/ mission; AoE damage.

** Foxkin:

• (3) Foxkin Armor Enhancement [+20 Maneuvers]
  
• (3) Customizable purple weapon, armor, or shield.

** Jiyin:

• (1) Jiyin Armor Enhancement [+10% dodge]
  
• (6) Self-installing CyberEyes [Accessory, +10% crit, +3% acc, dodge, xp boost]
  
• (9) Jiyin Portable Medbay [Single use, non-combat, full heal + status effect cure]
  
• Must be neutral or below with Chimera for Medbay option. Decreases in cost w/ lower Chimera rep.
  
• Tedious to gain favor, requires gigaworms.

** Kage:

• (1) Security Beam Disruptor
  
• (6) Security Cam Scrambler
  
• (9) Security Sweeper [disables security systems]
  
• (10) Mr. Lieu's Beacon [At ally, reusable item to summon your contact into mission.]

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** GalaxyMart:

• (3) Discount at Galaxy Mart vending machines
  
• (6) Free loot at Galaxy Mart vending machines
  
• (10) Vending machine private inventory [medkits, rare/epic items, and utility items for purchase; requires respected rep w/ Grey Solutions]

** Gray Solutions:

• (1) Choice of chems
  
• (1) Tetraphedrin [Pre-emptive cure of a' syndrome']
  
• (3) Medkits
  
• (10) Chimera Serum X [with ally, same permanent buff as above]
  
• Tedious to gain favor, requires GalaxyMart vending machines.

** H.E.H.S:

• Donate to their cause to unlock Valued reputation.
  
• At ally, gain Cruella's Carrier [Accessory, summon pet in battle]

** Ragnarok:

• (1) Large Medkit
  
• (1) EZ-Boom
  
• (1) Autocypher
  
• (1) Choo-Choo
  
• (1) Mentx
  
• (1) Spice
  
• (1) Zerk
  
• Allows you to trade favor & cash for Crimson Pact and, more importantly, Anarchists rep.
  
• At ally, summon vendor droid once per mission.
  
• Worthwhile Faction for the easy supply of large medkits.

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** Allure:

• (3) Alyssa Tickets [usable in side missions for bribing ambushes]
  
• (6) Christina Faith headshot [same as above]
  
• (10) Spa Treatment [Your selected party member will be unavailable for 3 days. No lasting effect as far as I could see!]

** PAR:

• (1) Swag bag [Three random medicine]
  
• (1) Neuro-Quencher [One-time consumable, stun, charm, daze, or confuse target]
  
• (10) PAR Salon trip [Similar to Allure Spa, 3 day vacation but no apparent effect]

** Riggo's:

• (1) Brew [Three random alcohol]
  
• (3) Riggo's XXX [One-time consumable, +5% dmg, crit || -5% acc]
  
• (6) Select Reserve [One-time consumable, -10% dmg taken || -5% acc]
  
• (10) Tiberius [One-time consumable; hireling joins party for mission, will not go against other independent corps]

** Social Stage:

• Allows trading of favor for another corp's reputation, on a 1:1 ratio (+ fee)
  
• Allows trading of favor for another corp's favor, on a 2:1 ratio (+ fee)

** TEC:

• (1) Antinite Spray [+30% nanite resistance]
  
• (3) Nanite Disruptor ["Can be used on hostile Nanite clouds to disperse them instantly"]
  
• (?) At ally, gain the option to purchase an A.N.C.H.; unfortunately the selection option is bugged and doesn't show in-game. 1xAutoRez consumable.

** Workers United:

• (3) Supply Drop [Random enhancements]
  
• (6) Gear Drop [Random green (blue w/ally) weapon, armor, shield]
  
• (6) Corps Plans Disruption [unclear on what this does - fewer hit squads?]