I found it too difficult to play on a laptop. It's good to try out and prototype new mecahnics, see how well they are received. The lock on and draw a strike mecanic for me, seems unnecessarily complicated.
Perhaps on a phone the swish action would work much better.
If you continue with it, I'd consider:
1 - a tutorial inside the game to teach the controls
2- only have one attacker to start with - let the player get used to the controls first
3 - consider making the controls easier.