There are four “Secret” Strangelets to be found at the Mythic World Tier; their locations should show up on your Kepler map as large white circles. Explanations as to their individual locations, how to launch them and their completion requirements can be found here: https://m.youtube.com/watch?v=Yv9EzgZTpEg While some of them can feasibly be completed by a Solo player* who thoroughly understands their underlying mechanics, you would do well to form a Fireteam and start with the Tank+Captains Strangelet in the Steppes as it is a strictly timed damage check that acts as the primary sticking point for players at the Mythic Tier; once completed the three remaining Stragelets will be much easier by comparison. * [i]per the most recent TWID, Kepler Activities at Mythic World Tier will at sone point be made more approachable for Solo players, but for the time bring it is unclear [b]when[/b] and by [b]what degree[/b][/i] (΄◉◞౪◟◉｀)