Dark Void

If you are having problem with Anchors on Hardcore difficulty, you need to do it "in the air" - use your backpack guns to shoot the Anchors leg on the one side, then turn around, shoot the legs on the other side and in one go (in the air) press B as soon as it appears but in front of the Archon, not in the back. If you are going from the tail - it takes much more time than attacking from the front.

The key is to keep moving that Anchor guns won't make too much damage.

Sometimes there is a glitch - the health bar of Ark is not appearing. If so, take your time - they won't kill the Ark at all and you have unlimited time alone with Anchors and UFOs ;-)

I took on the three Archons on Hardcore using a Level 2 jetpack. What I did was start with the ones lowest to the ground. I flew pretty far away, but across from the first one I chose. Then did a flip and went straight at it but the trick for me was to hold the brakes down as soon as I got my aim straight. This gives you more time to do damage.

Using that method, you can usually take out both leg joints in one run. If you're taking damage, just fly up and back the way you came and make a second run. When you have knocked out the two on one side, do the same thing on the other side - fly away and back pretty far, then go for a run, holding the brakes when you can see the joints.

Repeat this for the other two, taking out the one that's high up last, if you can. I don't think it matters much but that's how I did it. Remember to fly away if you're taking too much damage. By the time you come back for another run, your health should be full again.

I always took them out from the tail because it's more fun but you can go for the head if you like. Hope this helps.