FlopsyTheRabbit said:Thanks that all makes sense. Still need to get a good feel for the dodge, it feels like it gives iframes but either not very many or not consistently. I've been trying to use the prosthetics but finding them a bit hit and miss, they take a little too long to come out sometimes.
It's interesting you bring this up. I was going to discuss this in my previous response but felt I'd already been too long-winded.

You're absolutely right. I've read in many places that the dodge is simple, "Just press

--that's all there is to it." However, they are wrong and you are right. You are invulnerable only during the beginning of the animation. There is a window of vulnerability at its conclusion.
The solution is to side step with

pressing the left stick in the direction of your choice or not at all and immediately press

to guard. This executes the side step where you are invulnerable and cancels the frames where you are vulnerable. It has the added advantage of guarding a potential enemy attack. In fact, there is a high probability you will deflect if an attack comes.
The disadvantage of doing the

->

option is you forego the opportunity for a counter. This defeats the purpose of starting out with a side step attack sequence to whittle the enemy's full health to below 80%. But, with time, you internalize how the enemy is going to react. One of three things is likely to happen:
1. The enemy does not move. You will end up at the side. Execute

->

->

2. The enemy will turn to face your side step destination point & guard or attack. Execute

->

->

3. The enemy will initiate an attack against your present position or at another point away from your sidestep destination. It may be a simple attack or a combo of 2 or more moves. Execute

one or more times until you are beside or behind the enemy as the attack or combo finishes and attack once followed by a side step.
In each of these three scenarios, you'll note we finish with a side step. What we do following that side step is dependent upon the same 3 enemy options.
This sounds a lot more complicated than it is. Basically, if there's a clear shot at the enemy's side or back, take it. If not, guard or side step again. When attacking, attack only once. Strong enemies and sub-bosses guard quickly. If the enemy is guarding, you will inflict no damage and expose yourself to risk. Any posture damage is quickly recovered by an enemy at full health.
As long as the enemy's health is above 79%, unless you have super twitch skills from extensive playing of the game, the objective is simple. Whittle enemy health away a slash at a time until the posture gauge turns yellow. Then, you can get more ambitious and start to inflict posture damage through deflections and other means (combat arts, prosthetic arts, etc.)
Note that low vitality affects your posture as well. But you have a tremendous advantage. Your posture will drop while you evade. This is not a Dark Souls game where everything you do exhausts stamina. If you sprint away from the boss by holding down

, you will recover posture. If, once you're far enough away, you can hold

to recover posture very quickly even at low health. Because you can dash around at will without incurring any penalty, you can watch enemies and learn their combos while staying just out of reach--a luxury you don't have in a Dark Souls game.
I like to use Hanbei, the trainer, at the Dilapidated Temple. You can do free form training to practice the side steps. Because Hanbei does not damage your vitality, you can prolong free form training sessions. What you want to do is internalize what you do after a side step. You:
A. Follow up with an attack if you end up beside or behind Hanbei
B. Follow up with a guard if Hanbei attacks you
C. Follow up with one or more side steps when Hanbei moves away from your direction of attack. Your goal is to side step behind or beside Hanbei so you can attack.
As you've found out for yourself, the ending frames in the side step animation are not iframes. The split second of vulnerability could expose you to a devastating hit from a powerful enemy. As you get more comfortable with deflections, you may decide to abandon the tactic of side step -> attacking strong enemies at the beginning of each encounter The deflection (single or consecutive) followed by a counter is the meat & potatoes of the game. You are much more in control when continuing to face the enemy and deflecting attacks than you are side stepping attacks.