Looking for Sektor's alternate costume.

[gamester]

I've been replaying Armageddon for the last week and I now have the location for all alternate costume chests except Sektor's.

I know it's a long shot but does anyone know where to find it? I'm out of my wits here.

thanks for reading

Game

If you need the location of anyone else's costume chest, just let me know

[Gambid]

The second icon on the second wall. Costs 1840 koins.

[gamester]

I didn't explain myself right.
I meant for the chest/hidden location in Konquest mode, so I can unlock it without paying or collecting the 60 relics.

Thanks anyway

[Gambid]

There is no chest that contains Sektor's alternate costume, as far as I know.