Puzzle rating
These achievements keep track of your highest puzzle rating obtained (multiple of 100).
In order to get them follow the steps (starting in home page):
- mouseover Puzzles menu -> click on Puzzles
- from the menu in the right select Puzzles
- start solving them
There are 46 overlapping achievements. First one is for 500 rating and you obtain a new achievement for each 100 more rating you get, all the way up to 5000 (600, 700, 800, 900, etc).
Note: puzzles solved with hint do not count towards the achievements.
Here is the link that takes you there directly.