Turn 4: 40-50 secs
Same again this turn - the left-hand 'nader has fallen silent after 2 shots, but the right-most two have just confirmed their relative positions - 3 shots each now.
I'm still fairly confident he hasn't seen any of my troops yet - there's a very slight possibility that the queen was seen, but his 'nade pattern isn't doing slum clearance, just damaging open space, so...
I'll keep on lurking, and get into position for the charge with the drones and splatters next turn. Here's the general attack pattern:
The main push is going to be on the right, so I'll need the queen on that side. The rush will be led by 2 drones, followed by 2 splatters. So far, his 'nades have been fairly isolated - one explosion at a time. So, if I get caught by one, it's no great problem. I'll follow with a spitter - a great way of killing marines slowly - and get ready for the spikers to fire through windows, using hte hole he created last turn.
The queen and 3 buzzers will bunch up - the buzzers can go through buildings to get to the action.
On the left, I'll hang back for a bit longer - wait for him to commit on the right, and then rush in the drone / splatter combos - either on the left, or flanking on the right to catch that wing as they retreat.