Rules

• You go 1px/f walking, 1.5px/f with "speed" mode (select) and 2.0px/f on downward slopes (0.5px/f on upward slopes)
• Falling down right from the edge of a platform disables speed gain for 1 frame. You should always jump off from platforms.
• You can also fall down right on a dead enemy (while falling down), resulting in the same (no speed for 1 frame) effect.
• Game tracks subpixel positions. Only enemies has subpixel overcarry (TODO, check between levels too!)
• Fastest fire/rate is every 3rd frame (B, empty, empty).
• Number of lag frames on a level changes "cut scene" lag frames, you need to manually test the best lag route.
• The RPS RNG depends on the cutscene start's frame and it's advancing (A) frame. Additional rounds doesn't alter the time because of the final delay on these events.

Normal tricks

• B+U - vertically slower movement (flying).
• B+D - parasol bumping. You need to be above the enemy when colliding and a bit close to his hitbox horizontal wise to avoid taking damage.
• You also jump after killing an enemy or contacting with the platform after B+D, refereshing your (15 max) jump meter (the vertical length of the jump).

Vertical movement

• Jump meter checks A for maximum 15 frames
• Smallest jump is A (= A,A,A,A,A), any more A buttons within 10 frames will delay the vertical (subpos) speed reduction towards the apex of the jump.

Optimal lag reduction techniques

• "Rapid" ( > 1.5px/f) scrolling speed usually generates a lag frame (for drawing new objects and animating them). Depending on the scenario, you could manipulate it away with specific subposes (for enemies) or timing the killing of enemies/projectiles.
• Try to avoid drawing objects on the same row or column of other objects.
• Not killing enemies can be favoured when there's 3 or more enemies in the same horizontal/vertical plane.