Beethoven's piano style is particularly sonorous! He used the piano ingeniously, utilising its full range and very rich and resonant tone quality.
Look at the first chord played in the set work. The minor chord at such a low range over two octaves is very typical of Beethoven.
Articulation is the icing on the cake, enhancing the sense of drama Beethoven conjures up in the movement.
The staccato and slur in bar 9 is played in the high range of the instrument, deceptively lulling the listener into a false sense of security.
Staccato notes are often used to add a sense of lightness to the music to allow it to move along swiftly without too much weight. Look at the first subject for an example.
Compared to staccato, staccatissimo notes should be played even more separately and distinctly. This adds more emphasis and excitement to passages such as 2'50 (bar 93).
Alongside the very detached notes, we also have legato phrases marked with slurs to bring about more eloquence and fluency. 3'05 (bar 123) is a good example of this.
For Dynamics, see Instrumentation.