There is very little dynamic contrast in the song. It is all consistently loud (forte) and, as a result, no dynamics have actually been marked on the transcribed score at all! This is typical of rock music which tends to stay loud for the whole song to maintain a degree of excitement.
Sonority has been discussed in the page on Technology with the effects added (wah-wah, flanger, honky tonk piano). These factors also relate to sonority.
The electric guitar has some contrasting timbres including:
Vibrato, which is added to phrases such as in bar 24 (0'47) to add a greater sense of resonance which makes the guitar sound particularly strong and epic!
Palm muting is a technique applied in bar 69 (2'16) on a low F to make the sound more muffled. It is contrasted with the staccato countermelody played in the third chorus straight after which is a lot richer in tone.