Talk:Tethra's Doom/@comment-220.255.1.78-20140309024453/@comment-7645613-20140310000846

as stated on the forums by DEMegan, if you only play the second stage and get 1,000 points or more, you get all rewards.

https://forums.warframe.com/index.php?/topic/189811-pc-event-tethras-doom/