WIZARD VIRGE MISSION
this mission is actually a Master Key mission, meaning that you should have the master key to do this mission. its a lot easier with the master key as there are FIVE LOCKS that need unlocking.
Hub
Gear
Gold
Tomb
and Ornate locks all need the correct keys OR ... much easier, the Master Key.
If your crew have the five keys above then it is also possible to do it without the master key.
there are 3 routes to the Treasure Level (where Wizards V can be found)
1.  from game launch, use the stairs immediately adjacent
2.  using the master key
3.  not using the master key but in possession of the keys listed above
OK follow these steps, STEP A go to the Castle Teleporter Room.  there is a bridge walk way over to the Blue Stones, this divides the teleporters into two halves. stay in the Northern half , is there a teleporter live UNDER the bridge walk way? YES the mission is a go, no and the mission cannot proceed! OK if not, look at some wall candles and Ivy growing up the wall, there is a stout oak door nearby, is this open? to open it defeat ALL nearby enemy creatures! 
STEP B  once the wooden door is open you will immediately see just past it is a HUB LOCK, use the hub key to turn the lock, a teleporter is now live under the bridge walk way, enter it! 
STEP C   jump down from the canopy into the chamber where you have opposition in the form of a Ratboss and an Ice Guardian, insert the Gear Key and descend the adjacent trapdoor to the Beach
STEP D    turn so that you are facing away from the beach, if your view is obscured by a tree, just move through the tree to the stairs down. explore the Treasure Level as much as you can but without entering the water. press TAB to see the level
STEP E    insert a key into any lock that will accept the key, the Army of Ratbosses is released, keep using keys until you have no keys left (use TAB to see the level in detail)   
STEP F    if you do get stuck, there are several exits from the level back to the main game e.g. enter the water to find an exit back to Sewers
STEP G    the last lock is the Ornate Lock, this opens the end portcullis which allows the crew into the Sacred Crucible chamber. place an item onto the crucible, a nearby passageway is opened, repeat this method three times and all 3 nearby passageways are open. TIP! do not remove any of the items 
STEP H    the 2nd passageway is the most important and leads the crew to the Battle Arena, go there and engage with the Treasure Guard, long ago these creatures were around in much greater numbers to sentry the eye watering treasure which was looted in the dim distant past
STEP I     take down as many of the Old Guard as you can, then SAVE THE GAME, then move to the water channels and you will descend 10' into deeper water, look for a wooden ladder that takes you to the Skeleton Commander's outpost, eliminate him and his cronies and move on
STEP J    the crew are now on the outer reaches of the Treasure Level and increasingly closer to the Fearsome Wizards Virge, when you find it, it is certainly a moment to savour
STEP K    what a mission!   congratulations on bagging the top atrefact in the Dungeon World 
getting the individual keys is pretty hard, here they are listed:
Hub , this is the most difficult. to find it you must locate the Gold Sewers, this  is found in a Mine area. to get there go on the Teleporter next to the PIT DOWN. then your crew must carefully take down all the Magma Golems. one by one gates open up in the surrounding balconey path. one of them leads down to the Gold Sewers, this sewer platform includes a trapdoor that currently is locked. your crew must first use a gold key in the CITY. See Masterkey steps to understand where the gold lock is. the gold lock unlocks THREE trapdoors, make sure your crew use the Gold Sewers one! this will lead you to the Hub Key!
Gear , this is almost as difficult as the Hub Key but it is found on the old Treasure Level. 100s of years ago the Treasure level was ransacked and there now remains very little loot there, however there is a Gear Key. when you start the game, descend from Tomb Level to Mu as per the video the https://www.youtube.com/watch?v=LK1RieBStqg&t=9s this is a fairly hefty initiation level and at 1.17 in the video, the crew can be seen arriving in Treas the old Treasure Level. it is basically a puzzle to be solved, the blue wall button can be pressed 7 times to hurry up the game speed if needed, the Gear Key is there somewhere! (see the video) 
Gold , there are more than 2 gold keys. to find the first, collect the 3 gems, blue, green and red, then insert them into the Gem Locks. beyond the Gem Locks is a gold key but you may need to be in the dark to see it  . there is another Gold Key upon descending from the Gold Sewers very close to the Hub Key as per above.
Tomb , found in Pyramid Level , defeat large enemies who often carry them. also found in Advanced City and Advanced Sewers. 
Ornate , be careful when playing the Push Blocks, an ornate key is in one of the side cages but keep your eye out for it
VIDEO SHOWING PREPARATIONS >   https://www.youtube.com/watch?v=V38KOXxHsKA&t=724s   




MASTER KEY MISSION
the actual mission begins in the South Pyramid Barracks. The gate is usually locked but is a STONE GATE adjacent to a set of ring armour.
to get there and find the Stone gate unlocked complete these steps
STEP 1.  go to the Castle Teleporter Room.  there is a bridge walk way over to the Blue Stones, this divides the teleporters into two halves. head to the Southern half of the teleporter room and find the teleporter adjacent to the wall mushrooms, is this teleporter on? YES the mission is a go, no and the mission cannot proceed!
STEP 2.  if you go on that teleporter now, then the mission is theorectically still possible, head South back to the Barracks, you will find the Stone gate is now open BUT the mission is now tremendously hard! delay this and go to Step 3 first, this will lesson the odds against you
STEP 3 .  find the Castle Teleporter Room and stay in the Northern half. see some wall candles and Ivy growing up the wall, is the teleporter next to the IVY ON?  is this teleporter on? YES the mission is a go, no and the mission cannot proceed! if yes enter the teleporter, immediately do a 180 turn from the Zhandul Orb and move in the opposite direction from the Z Orb and keep going! 
STEP 4 . spend some time battling the Pyramid Legions, see if you can eliminate most of them but you're in no hurry, take your time! these same Legions are the exact troops that guard that Master Key in fact, so it is better to engage with them out here than it is in the Triple Chambers that house the Key itself.
STEP 5.  keep returning to the Pyramid to smash the Evil Legions, once they are hugely reduced THEN go back to the Castle Teleporter Room.  find the teleporter adjacent to the wall mushrooms, is this teleporter on? YES the mission is a go, no and the mission cannot proceed! ok, if its on NOW go into it and find the Stone Gate in the Southern barracks
STEP 6.   see the fire etheral in the corner? this creature must be slain, see the video https://www.youtube.com/watch?v=gb1MmS-4a30
STEP 7. the Stone Gate admits you to the outer Master Key chamber, you see a metal ladder and a wall lever. use the wall lever to keep the stone gate open because on the other side of it there is no means to open it. stairs down take your crew to the Sewers and beautiful Crystal Armour , there is a pit down here to CITY (gold lock!) 
STEP 8.  try and keep the Stone Gate open if you can. it is tempting to use the wall lever to close the gate. if you do that, remember that if you depart this chamber, use the wall lever to unlock the stone gate.
STEP 9    you will see that as you defeat the fire etheral , a platform unlocks next to the metal ladder, this gives your crew access to the Master Triple Chambers
STEP 10.  right at the end of the Triple chambers is the Master Key, see the video for more details ....