Warframe

Stages

Earth

Coba
Mission:  Dark sector defense
Faction:  Infestation
Level:  5-15

E prime
Mission:  Exterminate
Faction:  Grineer
Level 3-5 

Erpo
Mission:  Interception (Archwing)
Faction:  Grineer
Level:  5-7


Gaia
Mission:  Interception
Faction:  Grineer
Level:  3-5

Mantle
Mission:  Capture
Faction:  Grineer
Level:  1-3 

Mariana
Mission: Exterminate
Faction:  Grineer
Level:  1-3 
Loot
Vitality mod

Eurasia
Mission:  Exterminate
Faction:  Grineer
Level:  3-5  

Cambria
Mission:  Spy
Faction:  Grineer
Level:  1-6   

Lua
Mission:  Excavation
Faction:  Grineer
Level:  1-6

Tikal
Mission:   Dark Sector Excavation
Faction:  Grineer
Level:  5-15

Everest
Mission:  Exterminate
Faction:  Grineer
Level:  1-3

Pacific
Mission:  Capture 
Faction:  Grineer
Level:  1-3



Lith
Mission:  Defense
Faction:  Grineer
Level:   1-6

Oro

Mercury

Apollodorus
Mission:  Survival
Faction:  Grineer
Level:  1-6

Lares
Mission:   Defense
Faction:  Grineer
Level:  1-6

Caloris
Mission:  Capture
Faction:  Grineer
Level:  1-3

Neruda 
Mission:  Sabotage
Faction:  Grineer
Level:  3-5 


Caduceus
Mission:  Exterminate (Archwing)
Faction:  Grineer
Level:  5-7



Elion
Mission:  Mobile Defense
Faction:  Grineer
Level:  1-3

Eminescu
Mission:  Exterminate
Faction:  Grineer
Level:  3-5

Terminus
Mission:  Exterminate
Faction:  Grineer
Level:  1-3

Boethius
Mission:  Mobile Defense
Faction:  Grineer
Level:  3-5

Odin
Mission:  Interception
Faction:  Grineer
Level:  4-6  

M Prime
Mission: Sabotage
Faction:  Grineer
Level:  1-3
Loots:  Vitality

Suisei
Mission:   Spy
Faction:  Grineer
Level:  5-7
Loots:  Parry, Vitality, Thief's wit, Heated Charge

Tolstoj
Mission:  Assassination
Faction:  Grineer
Level:  1-3
Loots:  Point strike, Vitality (warframe), Gunslinger 

Pantheon
Mission:  Exterminate
Faction:  Grineer
Level:  5-7
Loots:  Pressure point, Vitality (Warframe),  Swirling tiger

Verdi
Mission:  Deception
Faction:  Grineer
Level: 5-7
Loots:

Relay
Mission:  None
Faction:  Tenno
Level
Loots

Mars

Vallis
Mission:  Rescue
Faction:  Corpus
Level: 6-8
Loots: 

Hellas 
Mission:  Mobile Defense
Faction:   Grineer (some Corpus will show up)
Level:  6-8
Loots:  Iron Phoenix, Vitality (Warframe), Stretch, North wind, Point strike

Silvanus
Mission:  Crossfire 
Faction: Corpus vs Grineer
Level:  8-10
Loots:

Spear
Mission:  Resuce
Faction:  Grineer
Level:  10-12
Loots:  

Arcadia
Mission:  Survival
Faction:  Corpus
Level:  6-11
Loots:  Metal Auger, Fast deflection, Fusion core, Reach, Melee prowess, Cryo rounds, hellfire

Alator
Mission:  Capture
Faction:  Corpus
Level:  8-10 
Loots:   Trick mag

Martialis
Mission:  Spy
Faction:  Corpus
Level:  10-12
Loots:  Vicious Frost 

Alvar
Mission:  Crossfire
Faction:  Corpus and Grineer
Level:  8-10

Ultor
Mission:  Crossifire
Faction:  Corpus and Grineer
Level: 10-15
Loots:  Pistol gambit 

Tharsis
Mission:  Sabotage
Faction:  Grineer
Level:  6-8
Loots:  Fever strike, Vitality 

Augustus
Mission:  Interception
Faction:  Corpus
Level:  8-10
Loots:  Magazine warp   
   
War
Mission:  Assassination
Faction:  Corpus
Level:  12-17
Mods:  Thief's wit
Loots:  Mag helmet blueprint, Gallium

Venus

Location:  V-Prime 
Mission:  Rescue
Faction:  Corpus
Level:  6-8
Mods:  ???
Loots:  Phase specter blueprint

Location:  Ishtar
Mission: Capture
Faction:  Corpus
Level:  6-8
Mods:  Rush, Ammo drum, Fusion core
Loots:  Fieldron sample, Alloy plate   

Location:  Unda
Mission: Spy
Faction:  Corpus
Level:  8-10
Mods:  Serration
Loots:  Tower capture, Polymer bundle

Location:  Aphrodite
Mission:  Mobile Defense
Faction:  Corpus
Level:  6-8
Mods:  Reach, Revenge
Loots:  Health restore, Fieldron sample, Alloy plate, Circuits,  Polymer bundle, Nav coordinate, 

Location:  Malvar
Mission: Dark sector excavation
Faction:  Infestation
Level:  10-20
Mods:  Homing Fang, Reach, Rupture, Warm coat
Loots:  Tower II defense, Fieldron Sample, Cryotic, Polymer bundle, Alloy Plate, Circuits

How to get Rakta Cernos
Need to have an exalted tittle with  Red veil.

How to join Red Veil?
Go to you syndicate console inside your ship and give some offerings.

How to Activate Red Veil allaince
Go to your warframe appearance --> Regalia --> Front sigil --> Choose Red veil.