It's a rare niche mech, but had a discussion with another person on the damage --- in AS, it's size, times inches moved, divided by 8 ... in the case, of the Celerity, that would be 48, so 6 damage, and the spikes it has, which add Melee would make that 7.... that is my interpretation on it.
The person I was talking to, believes that since MEL raises the melee value by one, as though it were one class higher, that you use that, which would give that Celerity a damage of 12 ..... if you managed a full 48 inch charge.
I am putting this out, as a light mech making a 12 point charge, with impact resistant armor seems a bit much..... but I do want to clarify, in case I am wrong.
Nahuris