Hunter, you have proven your dedication to the cause. It is time to enlighten you, to show you what we have built together. It is time to enter the Sanctuary.
In the simulated universe of the Sanctuary, my data-immortals have fought each other countless times. Through this violence, I have studied and documented their true character. But my study cannot be complete without the power of the Tenno, the most powerful specimen in the system — you. Your duty in this experiment is to kill as many specimens as efficiently as possible. In this chaos, the true nature of these creatures will be revealed... as will yours.
Sanctuary Onslaught is an endless game mode introduced in Update 22.18.
The objective is similar to Survival missions, where players must last as long as possible by continuously killing hordes of increasingly difficult enemies, as quickly as possible.
Players are limited to one large room from a random tileset in every zone. In order to advance through the zones, players must maintain efficiency by constantly killing enemies, then enter a conduit at the end of the zone's time limit in order to progress to the next. The opposing faction of enemies encountered in each zone is also randomized on a per-zone basis.
Players must complete The New Strange to access this game mode. To begin, players must talk to Cephalon Simaris at his Sanctuary in any Relay or select "Sanctuary Onslaught" in the Syndicate World State Window tab.
Upon starting the mission, players will have to enter a conduit and maintain efficiency meter against increasingly difficult enemies. Each enemy killed in the process will contribute to the overall efficiency, with Eximus enemies contributing more.
Every zone lasts for 2 minutes and 30 seconds. When a zone is complete, Simaris will open a Data-Conduit to a new and harder zone within his Sanctuary. The conduit closes after 30 seconds. Players who have not entered the conduit before then will be extracted with their rewards.
Every two that are completed will provide a reward.
Conduits: Portals connecting one Zone to the next.
Efficiency: the means to maintain a Conduit. Once efficiency reaches zero, the run will be over. The deeper the player progresses into the Sanctuary the faster their efficiency drops, capping at Zone 16.
Efficiency Stimulus: Pick-ups which increase the player's efficiency by 10%. The number of Efficiency Stimuli that appears starts at 4, which gradually decreases the deeper the player progresses into the Sanctuary, up until after Zone 15 after which they will stop appearing.
However, locked lockers may appear depending on the tileset, and can be opened using Master Thief or Scavenge to acquire orbs and ammo pickups. Lockers do not drop resources or mods, but, unlike specimens, they may yield Affinity Orbs and occasionally an Ayatan Star upon opening one (although Ayatan Stars are completely invisible in this mode).
Each week Simaris simulates a predetermined sequence of tilesets and Elite Specimens. This Onslaught is not for the leisurely and requires a Rank 30 Warframe to enter, as Specimens are much stronger. In addition, usage of Warframe abilities must be staggered or they will become temporarily disabled.
Enemy level starts at 60-70 and gradually increases to 150-180 beyond Zone 15, 200-220 beyond Zone 20, and 250-280 beyond Zone 25. Increased efficiency drain caps at Zone 15.
4th ability will be disabled for 15 seconds, when used twice in less than 10 seconds.
Channel abilities only count when turned on.
Other abilities can be disabled if used extremely frequently, e.g. Trinity's Energy Vampire with reduced ability duration.
Removed Kuria’s from Onslaught tiles since Simaris does not allow the use of gear in the Sanctuary.
Sahasa Kubrows can no longer dig up Resources in Onslaught.
Fixed several Host migration issues in Onslaught.
Fixed a Lua Onslaught tile having doors that appeared unlocked due to incorrect materials.
Fixed End of Mission rank being A- when aborting before a Zone has been completed.
Hotfix 22.18.8 Sanctuary Onslaught Changes:
We still see Onslaught as a more bite-sized gameplay experience, but combined with the efficiency changes below, how far your team can last should be dictated slightly more by your ability to kill instead of hard numeric limits. The Simulation is alive and ever changing.
Removed the increased Efficiency drain when you hit Zone 20 in Sanctuary Onslaught and from Elite Sanctuary Onslaught when you hit Zone 14. Efficiency drain will hit its max rate in Zone 16 of Sanctuary Onslaught and Zone 15 of Elite Sanctuary Onslaught.
Added more tiers of increasingly higher level enemies in both Sanctuary Onslaught and Elite Sanctuary Onslaught:
Level 80-100 in Zone 15
Level 110-130 in Zone 20
Level 130-150 in Zone 25
Elite Sanctuary Onslaught
Level 200-220 in Zone 20
Level 250-280 in Zone 25
Removed unnecessary ice environment textures in the Grineer Shipyard Onslaught tile.
Removed an Orokin Derelict tile from Onslaught that was too small - this means that Zone 12 of Elite will have a new tile.
Removed an Infested Corpus Onslaught tile that was deemed unsuitable for the Simulation.
Sanctuary Onslaught Fixes:
Fixed Clients being perpetually stuck on the loading screen after a Host migration in Onslaught.
Fixed cases of Conduits not materializing after a Host migration occurs.
Fixed cases of Clients being trapped in the old Zone after the Host transitions through the Conduit first and disconnects on the other side.
Fixed Efficiency continuing to drain after a Conduit has appeared and you have yet to pass through it. Once all players are through the Conduit and into the next Zone, the Efficiency will recommence draining.
Fixed Specimens beating the crap out of helpless players who are trapped in the loading screen when a Host migration occurs. Specimens will now be paused while you are in the loading screen.
Conduits now automatically closes in 30 seconds after spawning. If you take too much of your sweet time getting to the Conduit, you will be auto-extracted with your spoils intact. This is also our intended extraction mechanism for those who do not wish to go on - simply stay behind!
Improved Infested spawns by adding more spawn points in the Onslaught Derelict tile (most commonly encountered in Zone 17 of this week's Elite Rotation).
Improved numerous enemy spawns to Onslaught Asteroid tiles.
Removed an Infested Corpus tile and Orokin Tower tile that contained unremovable spoils in Sanctuary Onslaught.
Removed a white bar in the End of Mission screen for Sanctuary Onslaught summary under the "TOTAL" panel.
Fixed a crash that could occur when joining an Onslaught in progress.
Fixes towards players getting a white screen after jumping through a Conduit.
Fixed dark Warframe lighting when standing on broken platforms in the beginning Onslaught room before you enter the Conduit.
Fixed very dark lighting in the Orokin Derelict Onslaught tile.
Fixed Sanctuary Onslaught total wave score showing incorrect value after the first two zones.
Fixed Sanctuary Onslaught music not playing for Clients.