Thanks! Will buy RE6 this week then.
RE6 has amazing combat and mobility mechanics, but the game does a poor job teaching them.
Be sure to read my guide explaining how to play. Note the button mapping might be different depending on the control scheme.
In short, the two most important functions to know are the L2 trigger and the X button, and the ways they layer together to create an astounding variety of moves.
The X button is the action button. Tap it while standing in place to duck. Hold it to run. While running, you can effortlessly vault over obstacles, climb ladders, etc.
L2 is how you aim. But here's where things get cool: If you tap L2 while running with X, you'll slide. Keep holding it after sliding and you'll stay on your back on the ground. Once on the ground, you can tap left or right to barrel-roll in that direction, or forward and back to scoot forwards and backgrounds. Release L2 upon sliding to spring back to your feet.
Now let's say you do the opposite: Let's say you hold L2 to aim, first, and then tap the X button. This will allow you to duck in place while aiming, a good way to dodge attacks while standing in place. But if you tap X and a direction while aiming — left, right, forward or backwards — you'll dive in that direction, somersaulting out of harm's way. And if you release L2 before the somersault is complete, you'll spring back to your feet.
Ducking, diving, rolling, sliding — learn these techniques! You can also recover faster when knocked down by tapping X. You'll roll back to your feet instead of lying there winded.
Other tips:
Tap R2 right before an enemy attacks to perform a counterattack. And tap L2 and R2 at the same time to spin around and target the nearest enemy, delivering a quick attack that stuns the enemy. This consumes a bar of your stamina gauge.
That's right, you have stamina now. This applies to your quick shot and melee moves. You can now perform a melee move at ANY TIME by tapping the R2 button; hit an enemy with R2 twice to stun them. You can also still perform special melee moves by shooting an enemy in the arm or face and running up to them for a context-sensitive attack that changes based on position, etc.
Try my favorite move: Sprinting up to an enemy and hitting R2 for a high-flying jump-kick to the face. Good for cranial combustion!
Inventory management is also key. One of the most useful skills here is healing. Normally, you heal by tapping R1. Each tap of R1 consumes one herb pill, Tic Tac-style, each pill replenishing one bar of your health gauge. When you run out of pills, you can automatically mix any herbs in your inventory and load them into your pill box by pressing R1 + Square. This shortcut allows you to mix and load herbs without going into your inventory.
There are many more techniques, but these are the most important ones. I'd actually recommend starting out in Mercenaries (available from the start) and experimenting with the mechanics there. Then you can try out the campaigns. Leon's campaign restricts your moveset at first, forcing you to slow walk and the like, but it's a lot of fun once it gets going and once you know the controls.
Another tip: You can set the QTEs to automatic in options, so that they complete themselves. You can also adjust the camera distance and change the aiming sight from crosshairs to an RE4-style laser.