Come back to Spree. Walk to the gate in the back of the village (#1) - you'll get there turning left on the left side of the entrance (it's the second gate there to the left). The peasant there will tell you about a mysterious mistress and a castle being under siege. Open the gate and walk along the path until you see the castle on fire (#2). Come closer and kill the bugs to collect red life force - you'll need it for more reds. Call them now (there's a spawning pit in the alcove on your left) and send them to blow out the fire blocking your way. Walk further killing more bugs. A few raiders will attack you, too, so kill them.
Walk closer to the castle - you won't get in yet as the bridge is lifted. Turn right, get rid of those raiders and send your reds to break another fire barrier. Be prepared for more raiders to attack you, so just kill them first and then turn the wheel (#1) to lower the bridge and get into the castle. Now be careful as the castle is really under siege and more raiders will be coming out of everywhere (#2). Keep fighting them and remember that you can always come back to the spawning pit for more minions.
When the raiders are down you can go up the stairs - left or right to break things and collect this and that (#1). Downstairs, you'll see a wall of fire in front of the dungeon entrance - soon we'll come to that and fighting more raiders, too, but first - go to an opening to your right (#2), fighting the guys that will attack you. There you'll find brown spawning pit, teleport, mana pit and, around the corner, a tower object increasing your life force. Let your minions take it to the waypoint and to tower (and visit it yourself if you will).
If you've gone to tower, return to the castle now, kill some red bugs and call more reds from the spawning pit in the alcove on your left. Walk down to the dungeon (entrance across from the bridge) and - welcome to new area: Dungeons of Spree. Let's go left first. Send reds to deal with the fire and watch a short scene. Get ready for more fire barriers and raging raiders - let your reds show what they can! Break the first barrier and walk ahead until you meet some people locked in a cell and the mysterious lady in a separate one (#1). So you're there to set them free. Fight more raiders and loot the room properly. Further to your right there's some stuff and red life force (bugs) to collect, and next fire barrier to break (#2). Use your reds on it and let the guys free. Now you just have to find the luggage of your future mistress (!). Be gone then!
Come back to the first room and this time go right - to another fire barrier for reds to break. Watch out for the raiders again (#1). Fight them and take the stairs to the next firewall. Break it and go to a fireplace. Let reds throw their little fire balls across it to kill the enemies on the other side and break the next barrier. Repeat the operation by the next fireplace. Look around for the loot and replenish your minions from the spawning pits (take more reds). Walk upstairs to the wheel (#2) and turn it.
There's more raiders coming out from the gate you've just opened! But what do you have your red warriors for! - let them deal with the guys from a distance. Now enter the bloody gate downstairs (#1) which will lead you back around to the dungeon entrance. Kill some raiders and check your energy level as you'll need it soon. Use the blood pit in the middle of the corridor (#2) and call more minions from the spawning pits (the more reds the better). Now, let's talk to the boss!
You can position some reds up the stairs so they'll cover your back when you fight the big eye. Take your browns with you for a hand-to-hand fighting. Remember that new opponents will keep coming from the weirdo - a few fireballs straight in the eye should make it. Now you need 12 minions to transport the luggage you've just uncovered (#1). The lady will be so grateful that she will... move into your place! Finally you've got someone to take care of your home while you're out doing business. Just check it out - first look around your throne. Go upstairs too, see - now you can arrange your little nest according to your taste: get some furniture and other facilities, and even pick the color of your cloak (#2) depending on your moods or simply to impress your folk!