Can't see anything spawning and flying half way across the screen with Z-attack :( Also... tbh I haven't realised there are two attacks, thought that there are 2 buttons for one attack and never used X attack, maybe that's why it was so hard when I was surrounded by enemies... :D
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that's correct actually, it's an "instant" attack like in Risk of Rain! So there's nothing that spawns and moves, just a raycast that shoots across the screen, then the sparks just spawn exactly where it was hit. You may want to play it full screen to see it. I'm not sure how many other games do it like that, so maybe people aren't too familiar with the mechanic.