Finally got the impossible badge. This was a great deal of fun to play, even when aiming for the frustratingly difficult high score of 3000. Light (90+): 1= 119, 2= 100, 3 = 106, 5 = 113, 6 = 126, 11= 102, 12= 128, 13 = 130, 14 = 100, 16 = 95. Dark (75+): 8 = 89, 9 = 89, 11 = 95, 12 = 98, 19 = 78. A little under 11 hours, 1326 deaths and 43k beams cleared.
Finally got the impossible badge. I thoroughly enjoyed the game, even with the RNG. Though not as essential as cantrips and shields, I found having multiple pieces (pawns especially) with diagonal splash handy for limiting the blight, especially in the harder gauntlet stages.
 "Jumphobia"){kind=icon}
 "Beam Ball"){kind=icon}
 "Pawnbarian"){kind=icon}