Problem unlocking Sacred Orb

[Celegorm]

I was playing online with some friend and I defeated The Beast with Tainted The Lost !

Sadly I din't unlock "Sacred Orb". I thought the problem was that i needed to beat the game on my own, but when i defeated it on my own, The achievement didn't unlock as well ...

Does someone know what to do ?

[Yumen]

if you have the mark for sacred orb you just go to stats > secrets and after a bit it should give you the achievement. if you don't have the mark then im not sure what to do then

[Celegorm]

Thank you !! That worked !

[Bronips]

Also