The Bulldog turns its turret to shoot at the Valkyrie. The light mech is struck in its left side by a volley of SRMs and AC/2 hits (4 damage LL, 2 damage LT, LA). The SRM infantry also shoot the Valkyrie, including landing an SRM on the cockpit ferroglass (2 damage HD, 1 pilot hit, 2 damage CT, 1 damage LT).
Meanwhile the Cicada takes a little damage from the laser squad (1 damage LT) before wiping them out with its machine guns (all dead!).
Likewise, the jump platoon tickle the Battlemaster (2 damage CT) only for 9 of their number to succumb to pulse laser fire (9 dead, 12 left in the jump platoon).
Finally, the Shadow Hawk wipes out the infantry squad north of it (all dead!). For good measure it kicks the medium tank by its foot up the backside. The damage is immense for just one kick, forcing the crew to bail (11 damage RR, major damage, vehicle immobile).
There was something weird going on with Alek's targeting systems and scanners. They probably needed more tuning. Both were suggesting there was smoke and a fire on the other side of the building, drifting up into the air. He couldn't actually see anything like that however!
(Ignore the VTOL exploding - megamek was being weird. It's still there)