An amazing thing, given the author is Spanish speaker I really miss the ñ Ñ. But I guess his answer is going to be, you can make those yourself!
I tried to do that, and now I’m just confused. The included glyph for the lower case n doesn’t actually fit the grid, so you can’t seem to replicate it. But also that grid doesn’t have enough resolution to do the tilde. Maybe I’m missing something?
It's most obvious with O, {, & and # which are impossible to draw with the grid that's presented to you.