The Stasis Prototype
Defeat Fallen Captains and Servitors on Europa to collect intel.
The Drifter has asked you to gather Fallen weapons intel while he inspects the blueprints you found. That might lead to more information about the Stasis weapon prototype.
"I've picked up a few Fallen weapons in my time. Pretty impressive what they can do with some spare parts and grit." —The Drifter