[Phalynx]

You are assuming wrong, as the "count" are the points, not the real count of items.

See also:
Q: My conditions don't work correctly on achievements and promotions.
A: Conditions in achievements and promotions are calculated in POINTS, not in count of items.
If you create an achievement for reaching the first 10 Days, you must enter the points needed for this. If you reward 2 points for every day, you have to set 2 points for every day since registering. Calculation: 10 days * 2 points = 20 as condition. So you will have to set 20 as the condition.