Thank you everyone for the support... we managed to successfully get 7/7 in A and 5/7 in B. I am sure not everything is 100% accurate but it worked for us. Just sharing our compiled notes from everyone who contributed to the forums and through some YouTube videos.
Area A
1/7 - Open the door at D-4 - [Brown Chest = Key #A +100 Galli]
2/7 - Kill Aubdela (leech NM) - [Red Chest = 500 Galli + chance of case/case+1/saphire]
3/7 - Kill x5 - [Blue Chest = 100 Galli + chance of case]
4/7 - Magic Damage (Ice) (1k-25k unconfirmed) (5+ finishing blow) Acuex South camp - [Brown Chest = Shard #A + chance of earring/saphire]
*worked with S.Floe/blizzara*
5/7 - Magic Damage (earth) (1k-25k unconfirmed) (5+ finishing blow) Acuex North camp - [Brown Chest = Metal #A + chance of earring/saphire]
*worked with Entomb/stonera*
6/7 - Self-cast ANYTHING at I-5 teleporter - [Brown Chest = Plate #A]
7/7 - Someone in party rest on raised floor immediately after D-4 door. Wait for health tick. - [Blue Chest = 100 Galli + chance of case]
Area B
1/7 - Magic Damage Kills on Elementals - [Brown Chest = Shard #B +100 Galli]
2/7 - Magic WS Kills on Elementals - [Brown Chest = Metal #B +100 Galli]
3/7 - Physical WS Kills on Elementals - [Blue Chest 100 Galli + chance of case]
4/7 - Using /hurray on Diaphanous Device #B - [Brown Chest = Ra'Kaznar plate #B +100 Galli]
5/7 - Kill Porxie NM with magic damage when it is below 20% HP - [Red Chest = 500 Galli + chance of case/case+1/saphire]
6/7 - ??? (TBD)
7/7 - ??? (TBD)