Excellent
The swordfights are smooth and seamless, perfect for a mobile game. Anything more or less would have taken away from the game. The controls are simple and easy to pick up. There is no one way to fight, you can decide whether to be offensive, defensive, or mix it up and be a bit of both.
There is plenty of equipment to collect and level up. Each piece of equipment has its own design and model and changes the appearance of the main character.
Plenty of updates have been promised, additional weapons, areas, and bad guys, so the $5.99 you pay for the game goes a long way.