List of ambush and invasion league challenges

The Ambush and Invasion leagues were introduced with the Sacrifice of the Vaal expansion and ran from March 5 2014 to July 5 2014. 14 players completed all eight challenges.

Have these Vaal Items

Own 44 specific items to complete this challenge. Note that if you trade any away, the challenge will un-complete until you obtain the items again. items in both Ambush and Invasion leagues are counted for this challenge.

Vaal Items List
Atziri's Splendour
Doryani's Invitation

Open Strongboxes

Open Strongboxes with each of the following properties. Strongboxes do not need to be identified to complete the challenge. The ambushers must be defeated before it is counted as open. (29 strongboxes)

Strongboxes
Arctic
Contaminated
Contested
Frigid
Incandescent
Menacing
Ossified
Putrifying
Rallying
Reaper's
Scorched
Unstable
Vibrating
Whispering
of Abundance
of Affluence
of Ascendance
of Bounty
of Complexity
of Curiosities
of Facets
of Quality
of Singularity
of Treasures
of Twinning
of Unity
of Waters
of Wisdom

Kill these Unique Invaders

Kill each of the following Invasion Bosses. (36 bosses)

Reach level 90

Attain character level 90 in each challenge league. This challenge still counts even if a character dies after reaching level 90. (2 leagues)

Leagues
Ambush
Invasion

Clear these Corrupted Areas

Kill all the monsters in every corrupted area in Ambush of Invasion. You can complete this in any difficulty level. Use the /remaining command to see how many monsters remain, once you're getting close. Everyone in the area will receive credit for the clear. (26 areas)

Corrupted Areas List
Arcane Chambers
Blind Alley
Clouded Ridge
Covered-up Hollow
Disused Furnace
Entombed Alcove
Entombed Chamber
Forbidden Chamber
Forgotten Oubliette
Hidden Patch
Inner Grounds
Mystical Clearing
Narrow Ravine
Neglected Cellar
Quarantined Quarters
Remote Gulch
Restricted Gallery
Sacred Chambers
Sealed Corridors
Secluded Copse
Secret Laboratory
Stagnant Canal
Starnge Sinkhole
Sunken Shingle
Walled-off Ducts

Kill Atziri and her Guardians

Kill each of the following Unique bosses. (5 bosses)

Use these Currency Items

Use the following 24 currency items in either Ambush or Invasion. (24 items)

Currency List

Items from Vendor Recipes

Complete vendor recipes in either Ambush or Invasion to receive each of the following items. A vendor recipe is when you trade a specific pattern of items to a vendor, not when you buy items from his/her purchase screen. (33 recipes)

Item List
Any Gem
Any Hybrid Flask
Any Life Flask
Any Mana Flask
Any Map
Unidentified Magic Item
Unidentified Rare Item