Did you know that in Warframe, you can earn a special Vor sigil for free if you complete missions in a certain order? (Image pending, I haven’t completed it yet and there aren’t any good images online yet)
This challenge was introduced pretty early in the game’s lifecycle, and uses some pretty old mechanics. The reason you might not have heard about it is that it was dropped without any announcement, players simply happened to find it and have been sharing it ever since.
To start this four step challenge, you need to complete E Prime on Earth, and then complete Fossa on Venus. These are pretty easy, but the real challenge is yet to come.
Next you need to complete Caliban (the uranus mission.) This mission will suddenly have enemies much higher level than usual, but with the same amount of drops/affinity as regular enemies. If you fail this mission or the following mission, though, you need to restart from the beginning.
For the final challenge, you need to head to Tolstoj to defeat captain Vor. This mission doesn’t use the new boss fight mechanics due to conflicts, so it should be easier even with his massively increased level and health pool. Once you defeat Vor, you’ll get a prompt to extract, similar to how defense missions work. DO NOT EXTRACT. THIS IS A TRAP AND IT WILL KILL YOUR RUN. Instead, continue the mission. Vor will respawn and you will need to kill him again. Do this until around rotation E (I know, it’s hard, but this was originally meant to be a cool secret boss for advanced players). When you kill him for the fifth time, the mission will automatically end and you will get your sigil.
Since this last part of the challenge is particularly difficult for players to complete and sometimes requires unique strategies, you can find help and guides for cheesing it by looking up “Caliban Vor E”
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