The Ranking System in Wolves at White Lake will grade you in five separate categories (ranking 'A', 'B', 'C', 'D', and 'F'), and from those, determine your overall ranking. ('A+' is possible for the Total ranking if all five categories are given an 'A' Ranking individually.
The Achievements will be handled in their own individual ways, depending on the Achievement itself.
For example, Avid Reader is given if the character collected all of the Journals in the game.
The requisites for each have been adapted to the demo length...so all of these are currently achievable...but some are pretty darn unlikely.
(the next version of this demo will include these Achievements and Rankings...but
based on completion of the demo, itself...once the complete game is released in the future it will have higher values to accumulate to earn Achievements and Higher Rankings.)
An example of this would be Achievements like Sadistic (more than 50 creatures killed) or Pacifist (less than 13 creatures)...in the full version of this game...these numbers would be greatly different than in their current form.