So, if you have had the pleasure of running maps with Nomad, you will notice he has three robots running with him from the Tavern as well as his mushroom. Well, here is a quick guide on how to acquire the robot trio!

Start off by talking to Brumik
Brumik's Arms quest - 10 Alien Alloy, 1 Power Core and Zoltar will offer you a quest now.

Zoltar mission - Brumik's Mechanoid - 1 Ascus (mushroom quest drop item from boss) and 1 Dimensional Key

First Map - you can farm robot parts for your tavern friends, need key for portal on that mushroom map. To get to portal, from starting portal, walk right, head up 3 lanes, walk to the end of the lane to another T, and head north and if you have your key, you can now portal to map 2.
Second Map - Another portal to use, was mid bot and pretty fast to find, walked around, nothing else to get. Go all the way to bot and walk through layer of trees, portal there
Third Map - walk straight north, to include the lines of trees, portal right there. CAREFUL of all the cultists when you go north, green and purple
Fourth Map - "netted" guardians, diablo look alike fireballers, obsidian golem and gargoyles. Go right, then up 3 lanes and turn left, then go straight to guy to rescue. have to walk through 2 "walls" into other lanes
Then walk all the way back to Main Gate to win. You will open up Think Tank in your Tavern now.

You can turn in Brumik's Mechanoid for 4k gold
Now Zoltar will have a new mission: Beyond the Portal.

Make sure you take Think Tank with you so he can make new mech in the Beyond the Portal mission. Make sure you only try to make one and head to exit -- Abmis

In Beyond to Portal. You will go straight to portal in that room and then the fun starts
Walk north immediately, Think Tank will now start "working" and asks you to get some mech parts
Start walking around now and get 2 pieces from packs of mechs you run into on the map. Once you do, now you can start making Flamer/Musketeer/Zapper after you have bought those patterns from Brumik in his shop.
Flamer - 800 gold, Salvaged Mechanoid Head, Salvaged Mechanoid Torso, Salvaged Mechanoid Legs x 2
Musketeer - 800 Gold, Salvaged Mechanoid Head, Salvaged Mechanoid Torso, Salvaged Mechanoid Legs x 2
Zapper - 800 gold, Salvaged Mechanoid Head, Salvaged Mechanoid Torso, Salvaged Mechanoid Legs x 2

My route i have found the best luck for robot parts: after TT starts up, head out left and follow the wall as it goes north. You will run into 2 packs separate from each other for spare parts. Also, there is a pack from TT, head north following the road and you will run into them. you only need two spare parts to make a robot so take your pick, head back to TT, get mech, and now you are going towards the end of the first map.

Starting from TT, I walk north, following road, moving left when you get to first Y, and head straight north until you dead end. From there, you can walk east following wall, and you will see entrance to new area where cave is eventually. Go the area of the map with the "starfish" gate. Follow that around until you get to a cave. I think i killed at least 2-3 starfish gates before getting to the cave. I always am walking south, and the cave will be a west path after the 2 starfish gates.
Inside the cave, follow it around. You will come to a point where you will have a starfish gate top or bot. top is chest, leave it alone, go bot. Keep going down and another starfish gate on bot -- then you get stairs and onto the castle.
Woohoo, up into the room, the crimson king! (died first time of course haha)
You killed him, now walk up top of room and you have exit!

Congratz on completing this huge storyline.

As always, let me know what i have wrong in this write up and I will make corrections