I havent log on for a long time but Im pretty sure I had an Acheron back then yet my Arsenal says otherwise (Am only seeing a Silent Nightblade).
Acheron was my very first Sword I invested in the game 3 years ago, and to my dismay-Title.
Any possible solution besides sending a Dead-Support Ticket System?
Hey, welcome back! Is it heated up to lvl 10?
Can't say anything, but Acheron got damage boost, at the same time was added one more 5* sword you can make from Silent Nightblade
http://wiki.spiralknights.com/Obsidian_Edge
So you have now option c:
Well you can try to use http://wiki.spiralknights.com/Support_Portal it works well.