The characters are PL 6 w/ 90 CP. You can trade-off up to half again campaign maximum, so Toughness of +9 and Defense of +3 (or the other way around, naturally).
Summon (Minion) 1 (Extra: Horde)(Power Feat: Progression x9 (1,000 minions) (12 Points)
Attack Focus (Ranged) 7
Dodge Focus 4
-Assault Rifle (+5 Autofire, 50', 16 EP)
-Tactical Vest (+4 Toughness)
Attack: 0 (+7 Ranged)
Defense: 14 (10 Flat-footed)
Damage: +0 Unarmed, +5 Autofire Assault Rifle
So you summon all your minions with a standard action, then order them to make a Combined Attack on somebody you realllly hate with your move action. So they make a combined attack for +1003 damage. Plus autofire.
All yours for the bargain cost of 12 points!