Your curve-to-line joins (like on the d and others) are too thick. This is a natural result of pushing a circle into a stem of the same line weight. Fixing it however would require breaking your strict geometric rule,but since it isn't followed at other places it should be an option.
The curl of the at mark starts at a drop below the a shape making it look like a q.
Some of your glyphs look like they came from different fonts (thorns, ampersand, dollar sign, math Greek). These should be unified. Also your accents are sized inconsistently.
