Fairly simple as its only avoiding the green blob bug things which rebound at angles and dont bounce (for most of the 30 secs). I had a bit of a routine though, from the start go full left to the door and wait till they spawn in your third then move back to the center then when they spawn move to the far right until they come out of the wall then you will have to dodge back inside that third for like a couple of seconds. That should be the thirty or there abouts which will land the cheev.