Hit Chance and Evasion are the two main factors that govern a player's total damage avoidance in AQW, they interact with one another in somewhat intuitive ways, however, there are a few exceptions too, which we'll discuss in the following sections. First we'll define the terms and list any behavioral quirks that may come about:
Miss Chance = 1- Hit Chance. Your miss chance takes priority over the enemy's Dodge Chance, in the sense that miss chance is rolled first, if this roll is in your favour then the success of your attacks making contact depends solely on your enemy's Dodge Chance (it is a two step process). Below you will see an example of this mechanic at play. Your total damage avoidance is a combination of both the enemy's Miss Chance and your own Dodge Chance and can be calculated simply using the following equation: Total Damage Avoidance (TDA) = 1 - enemy Hit Chance + your Dodge Chance.
In this video we have Danzon using ChronoAssassin, with a total Dodge Chance of 101.51%, and Jafeth using Abyssal Angel, which has a total Hit Chance of 110.41%. Mechanically speaking, with both of these stats above 100% Danzon can dodge (TDA of 90%) and Jafeth will never miss. Then at around the 16s mark Danzon uses a scroll of Blinding Light, which dramatically reduces enemy hit chance, bringing the Hit Chance of the Abyssal Angel below 100%. Now at this stage Danzon can dodge and Jafeth CAN miss, leading to a combination of the two occurring. Once the scroll fades Jafeth goes back to never missing, proving that in fact, miss chance is rolled first.
One would assume that Crit Chance has nothing much to do with Dodge Chance in aqw, however the opposite is true, in quite a significant way. Crit Chance independence is the phenomenon by which your base Crit Chance (as displayed in the character stat panel) is only truly accurate if your enemy has a base Dodge of 0% (which is impossible, since the universal base for Dodge Chance is 4%). In the case where an enemy does have a dodge chance > 0, your true Crit Chance would be your apparent Crit Chance + enemy Dodge Chance, this can be most easily observed when going up against a dodge class in PvP; the less hits that make contact, the more likely that they will be critical hits. Below you will see a demonstration of this mechanic in action:
In this video we have Danzon using Lycan with a total crit chance of 64.62%, and Frozen using Abyssal Angel, which has a total Dodge Chance of 41.49%. The general rule here is that your crit chance will be 100% when your apparent Crit Chance is > (1-enemy Dodge Chance) or in other words, when both add up to >100. What you will notice in this video is that each of Danzon's attacks are crits every single time without fail, then, at both the 1:18 and 1:30 mark Danzon applies pouncing strike, which reduces enemy Dodge by 30%. It is only in these instances where Danzon successfully lands a non crit, showing that Crit Chance and Dodge do in fact interact with one another. It is important to note that this only occurs with Dodge Chance, Hit/Miss Chance do not interact with Crit Chance in the same manner.
Testing with the Crit independence method has yielded surprising results, indicating that an enemy's Dodge Chance is a lot higher than it should be. From the various tests conducted it seems to be the case that either every class has a higher Crit rate than is indicated in the stat panel, or every class has a higher Dodge Chance than stated, with a variance of about 10-15% higher from expected values. However, since it is a lot easier to observe dodge chance above 100% than it is to observe dodge chance just below 100%, (which would require trial runs spanning hours ) it is challenging to get an exact figure on this variance. One possibility is that for some reason or another, a bug exists where the base Crit chance (5%) and the base Dodge Chance (4%) are added both before, and after the crit and dodge chance stat conversions, leading to a variance of 9%. which sits just under our expected margin of variance. However this is purely speculative, so take this information with a grain of salt.