How to ask for playtest feedback that is actually useful

"Any feedback welcome" produces the least useful feedback you will ever receive. Narrow it down.

Good requests:

• "Does the tutorial teach the double jump without telling you about it?"
• "How long before you understood the core loop?"
• "Where did you get stuck, and what did you try next?"

Also state: build length and platform, what is placeholder (so nobody wastes a paragraph on your grey box art), and whether you want a recording or written notes.

When the feedback arrives: the tester is always right about what they experienced, and often wrong about how to fix it. Take the symptom seriously; treat the prescription as a suggestion.