also, a good way is to activate the mission "Doctor's Orders" and don't collect the ECHOs. There is a room very close to Bloodwings Holding Cell with 4 cardboard boxes, and during Doctor's Orders, one has an ECHO in side it. During the quest, those 4 boxes have a very high chance of spawning at *least* 1 Loot Midget type enemy. Do NOT grab this ECHO.
You can take my Karma, but you'll never take......MY FREEDOM!