
Blackstorm |

5 (or 10?) - 50 (40, 50) feet. I do you stop and attack 5 ft, 10, 15, 30, stop and attack. My master (player is a dwarf), Sudden Charge 2xspeed, dwarf cannot stop in 10, 15 feet... For me is a interpretation crazy... I don't find a way to propose him that I have reason... (I must play a dwarf wizard, I don't ask for my personage)... I have reasons, or my master have reasons?

xNellynelx |

Forgive me if I'm not understanding your question correctly.
Sudden Charge lets you Stride Twice, and then attack if you end your movement within range of that enemy. A dwarf's speed starts at 20ft. So you can go up to 40ft and attack. You don't need to go the full 40ft. Stride is moving "up to" your speed.
Instead of thinking of it like [A,A] Sudden Charge
Think of it like
[A] Stride, [A] Stride, [A] Strike

Blackstorm |

Your GM is crazy. Sudden Charge lets you Stride twice. Stride says "move UP TO your speed".
"SUDDEN CHARGE [two-actions]
FEAT 1 BARBARIAN FLOURISH OPENWith a quick sprint, you dash up to your foe and swing. Stride twice. If you end your movement within melee reach of at least one enemy, you can make a melee Strike against that enemy. You can use Sudden Charge while Burrowing, Climbing, Flying, or Swimming instead of Striding if you have the corresponding movement type."
"Move UP TO your speed" I don't find...