Here is our strategy for Ragnahog level 4, watch it play out in the video below. We use 3 birds to grab 136760 and 3 stars.
Little Red steps up big time in the first shot. Throw him over the first structure and into the second, the ensuing collapse wipes out much of both. Stella takes the high road – a high lob into the debris racks up a lot more points and sets up the third shot. Send OB into the remaining right structure and blast it to oblivion.