Hopefully by this point everyone has figured this out, but since no one can talk to each other on the game unless you're a fire team. The spider tanks critical spots are his legs. The little little lights show It off. Blow the armor off then shot the neck when it opens. I got on a strike last night with 2 noobs and almost rage quit because they weren't hitting the critical spots and it took forever! Oh yeah and gold chest is down the stairs to the right of Sepiks prime entrance. I haven't done the moon strike yet so please post some tips if you got them.