Can true difficulty exist in a game like Warframe?

[Lutesque]

5 hours ago, luanle21 said:

With that in mind, a "true difficulty" is never going to be a thing, even in a game like the souls series, once anyone willing to put the effort into learning said game and mechanic, everything then will become a cake walk so to speak.

It can in PvP.... as for the Souls Series they have the same problem as warframe hence isn't difficult for the same reason.