Donc, pour faire cour :
1 Fusion Moa Event lasted from May 3 to May 6, 2013. The rewards for Tenno who participated in the event, by killing at least one Fusion MOA, were a Frost Prime blueprint and Credits64 100,000.
2 Artifact Defense Event lasted from June 21 to June 24, 2013. The possible rewards from event's mission were Corrosive Projection, Shield Disruption, and Infested Impedance. The missions were defense missions, which could've been against any of the three factions and had a variable number of waves that needed to be survived in order to complete the mission.
3 The Informant Event is very similar to the Fusion Moa Event in which a global operation is held requesting all Tenno to attack a brand new enemy. The event lasted 72 hours from Friday 5 July 2013 - Sunday 7 July 2013 and rewarded all participating players with the Snipetron Blueprint, a weapon which was removed in the past due to it not following Corpus lore, along with the Snipetron Vandal so long as the player had at least 20 Informer kills.
4 The Sling-Stone Event lasted from July 26–28, 2013 and required Tenno to attack the Infested to obtain Corruptors. These Corruptors were then used to taint the fuel cells of large Fomorian ships of the Grineer as a Mobile Defense type mission. Tenno had to attack and destroy one Fomorian ship for each planet and success rewarded them with new Ammo Mutation mods, 2-5 dependant on how many points were obtained by the player. alongside this all contributing Tenno also received a holographic badge.
5 The Arid Fear Event took place from August 9 to August 15, 2013 and was the first event to last more than 72 hours. Tenno were to take part in special replayable alerts which rewarded them with Corpus Datamass and Corpus Cipher which were used as components to create Corpus Void Key. These void keys would take players to a special Corpus void mission where they would capture special Scout enemies from 3 ships, each gaining new abilities with each ship to make them harder to capture. Succession of the event rewarded Tenno with access to the Grineer Settlement tileset along with 3 dual-stat mods (Shred, Vigor, Lethal Torrent) dependent on how many points were obtained per player (1, 50, 100 points respectively) and also a second holographic badge to commemorate the participation in this event.
6 The Gradivus Dilemma was an event that was held from Thursday, October 24, 2013 @ 06:00 A.M. GMT through Wednesday, October 30 @ 4:00 P.M. GMT. The event was focused on special Exterminate missions in locations on Mars that the Grineer and Corpus were competing for control of. Tenno chose to assist a faction of their choice in defeating the other, with special rewards offered by the victorious faction for helping them achieve victory.
7 The Hunt For Alad V was an event that was introduced in Update 11, and ran from November 20, 2013. It lasted until the infestation had been cleared. The missions type was extermination against infested, and the hunt was to make Alad V reveal his position on Jupiter.
8 The Cicero Crisis was an event that was held from December 19, 2013 to January 6, 2014. The Grineer set out to poison the great overgrown forests of Earth. Players were tasked with scanning Earth's flora for ingredients and then creating and injecting antitoxins into the poison-spreading machines. Introduced the Earth jungle tileset.
9 Operation Oxium Espionage was an event released with Update 11.9. Tenno had to hunt for a new Corpus unit, known as an Oxium Osprey, for a new Orokin alloy, Oxium. The event started January 29 and ended on February 5, 12 PM EST.
10 Tethra's Doom was an event released with Update 12.4. The Tenno must stop Councilor Vay Hek and the reforming Fomorian Fleet from dominating the system. The event began on Wednesday, March 5, and ended at 12 PM EDT on Wednesday, March 12.
11 Specters Of Liberty was an event released with Update 13.2. The Tenno must rescue members of the Red Veil resistance movement that have been captured by the Grineer and the Corpus. The event began on Thursday, May 2, and ended at 12 PM EDT on Thursday, May 8.
12 Operation Breeding Grounds...
Pour plus d'info : http://warframe.wikia.com/wiki/Events
Ps : "events" sur le wiki 
Aussi magique que Google dis donc
