1. There are 9 levels of Critical Shots and as you get higher CS, the time needed for CS gradually decreases.
But atm, when you put 3 on archery skill and get Critical Shot I, it works just as same as Critical Shot IX.
2. Rapid Fire I and II works as same and there is no difference.
According to patch note for 1.62 : http://camelotherald.wikia.com/wiki/Patch_Notes:_Version_1.62
"- Archers receive Rapid Fire 1 at 35 specialization level in their particular bow skill, and Rapid Fire 2 at spec level 45.
The difference between the two is how much endurance they take - RF 2 takes less endurance than RF 1."
But that endurance reduction is not working on Phoenix atm.
But atm, when you put 3 on archery skill and get Critical Shot I, it works just as same as Critical Shot IX.
2. Rapid Fire I and II works as same and there is no difference.
According to patch note for 1.62 : http://camelotherald.wikia.com/wiki/Patch_Notes:_Version_1.62
"- Archers receive Rapid Fire 1 at 35 specialization level in their particular bow skill, and Rapid Fire 2 at spec level 45.
The difference between the two is how much endurance they take - RF 2 takes less endurance than RF 1."
But that endurance reduction is not working on Phoenix atm.