...And I forgot that you can't do line breaks on Kongregate comments. >_< Separating them: Volcano "Holy Mountain's Eruption" | Devil Sign "Mephisto Torment" | Angel Sign "Solar Halo" | Purgatory "Torment Of A Hopeless Existence" (that one's a really Touhou-sounding name XD) | Deity Sign "Shining From Heaven on High" | Seraphim "Six-Winged Celestial Blade" | Divine Fury "Wrath of the Skies" | Demonic Fury "Nine Circles of Hell" | The Last Judgement "Rapture Inescapable" | "Oblivion" | Bullet Heaven "Ragnarok on Mt. Megiddo"
The Stage 6 boss is a total Cirno. You can hide in the blind spot just to the left of the middle bottom of the screen, right next to where he fires his initial stream of bullets straight downwards.
I just saw a hilarious glitch: This one person was climbing the ladder into the attic, and as she was climbing she kept jumping off the ladder into the wall, reappearing back on the ladder, climbing up a bit more, and jumping off again! It's like she was trying to commit suicide, but she kept hitting her head on the wall and landing back on the ladder.
The levels 2, 5, and 8 song is called Trap Phantasm, and the levels 3, 6, and 9 song is called Path to the Truth. Both are from Megaman ZX Advent, the first one plays during the battle with Prometheus and Pandora, and the second one plays in the Undersea Volcano level.
The fake laser barrier is directly below a 3-block-wide platform in the lower area. You need level 9 key to get through the gate before the laser maze where the smiley is.
Once you get the double jump, it is possible to get the dash powerup early by sequence breaking in Serve No More (with the Ancestor statue). Double jump onto the far left ledge with the spikes (you will take damage from the spikes, but don't worry) and then quickly double jump onto the black platform to the right of Memory #25 (I recommend having at least 3 life when you do this because of the robot). Rate + to keep this comment alive.
I just beat the game and I know a good strategy. 1: Running around like a maniac is futile. 2: Stand in one place and watch the ceiling above you. 3: If a laser appears above you QUICKLY run to the left or right. 4: Repeat. 5: When the blocks start coming in from the left you will need to pay more attention to the ceiling when jumping over blocks because the lasers are still around. This strategy should at least get you through the first half.
 "Bullet Heaven"){kind=icon}
 "Frantic"){kind=icon}
 "Jacob and the Gyrocopter"){kind=icon}
 "Kingdom Days Sim Date"){kind=icon}
 "Haunt the House"){kind=icon}
 "Cactus McCoy 2"){kind=icon}
 "Kill the Heroes"){kind=icon}
 "Flood Runner 4"){kind=icon}
 "Burrito Bison Revenge"){kind=icon}
 "Death vs. Monstars"){kind=icon}
 "Adventure Story"){kind=icon}
 "I Am An Insane Rogue AI"){kind=icon}
 "Robot Wants Puppy"){kind=icon}
 "Legend of Kalevala"){kind=icon}
 "Dragon Rescue"){kind=icon}
 "ELEPHANT RAVE"){kind=icon}