There should be an event where there's a very secret parkour to a portal that teleport you to a boss fight and if you win, you can get an event item from years past, but you can only solo the boss and the parkour is very hard
Also I got this idea from arsenal bc I know they have done this and it worked, so I thought why no r2da?
If it is insanely unbalanced its ok
What do you think?