The Superhero Database Classification number, or SHDB Class, is a number that represents the overall 'power' of a character. All traits of a character are used for calculating the Classification.
What it DOESN'T mean
This doesn't mean that a higher class would always beat a lower class character. But the bigger the difference in Class is, the more obvious it is who'll win in a fight.
How is this calculated
( INT^1.3 + (STR*0.5 )^2 + (SPE*0.5)^2 + DUR^1.6 + (POW + (SPS*SPL))^2 + COM^1.8 ) ^ TIER
Super Power Score and Level
Every Super Power has a score (SPS) that is used to calculate the Class. Each Super Power also has 3 levels (SPL). The level is set when connecting that Super Power to a character. The level determines the final score, of the Super Power, being used in the calculation.
There are some things that makes me think that Achilles was kind of immortal in the movie:
1)David Benioff, the writer of the movie said that one of the ideas of the movie was that until Achilles fell in love with Briseis, he was invincible and unable to get hurt by human beings and love humbled him to the level of humans and make him mortal.
2)Also There are some scenes that makes me sure that he couldn't be killed by human, for example he just puts shield on the back and arrows get automatically dodged (he probably didn't even realize that this move saved his life)
so is this scene relating to something David Benioff was talking about or Achilles is just lucky?
On the other hand there is a dialogue in the movie which states that Achilles does not think that he is immortal (maybe was, but does not know)
- "They say you can't be killed''
- "I wouldn't bothering with the shield then, would I?''