So what's the secret to shooting the relics out of the relic towers? So far I've emptied 2 SRV repeater reloads into different towers at different angles all over the towers...and I'm failing to have any drop from any towers...bug? From what I've watched on the web on how to get them out of the towers, half a dozen shots at one of the 3 tower parts surrounding the relic and they fall away... there doesn't seem to be anything special...what have I missed?