Challenge completed. Hard as coffin nails though (still likely to be run again though for those who are for it). Fundamentally the team was loaded up with APIII. 2 Sentinels 2 Soldiers and the strategy was to reduce the banshees barriers down using warp and funnel them into a kill zone at the top above the ramp where the prox mines/concussive shots and close range weapons could take them down before the rest of the horde could really overwhelm us. On the whole the strategy worked pretty well though we had a couple of Banshee OHKs due to the sticky nature of the geometry. As ever with gold fortune favoured us with the objectives to some degree. The first being delivery, second targets and third holding an area (which required some judicious use of rockets), but on the whole went far smoother than we expected for a wave 10 assignment.