Thanks so much for the feedback! I ought to make it more clear -- you're not expected to "clear" every single block in every level. You just need to complete the level twice. I'll have to indicate that better, somehow.
Agreed that scientists beepspeak is too harsh. I'll soften it a bit. And I plan to fix the aspect ratio and resolution problems. I'll def follow your advice and show a "T" graphic for dialogue even though key bindings are temporary -- I'll make that change and re-upload the game when I get home today.
Thanks again for the very specific and helpful feedback!