Maintenance for the week of December 23:
• NA megaservers for maintenance – December 23, 4:00AM EST (9:00 UTC) - 9:00AM EST (14:00 UTC)
• EU megaservers for maintenance – December 23, 9:00 UTC (4:00AM EST) - 14:00 UTC (9:00AM EST)
If you're asking whether you can do part-completion on each of 5 different characters and it will count as 1 total completion then yes you can, but you still have to get all the different parts at least once each.
For example each map has 6 delves and you need to do each of them once, it doesn't matter whether that's all on 1 character or across 2, 3, 4, 5 or 6 characters. But completing the same delve 6 times on 6 different characters will still only count once.
PC EU player | She/her/hers | PAWS (Positively Against Wrip-off Stuff) - Say No to Crown Crates!
"Remember in this game we call life that no one said it's fair"