Protip: If you die with very specific timing after restarting (unsure of exact timing), you become invincible. If you get your sword out before the glitch kicks in, you retain it, making levels borderline-trivial.
Another protip: Right-clicking, then left clicking lets you move much faster than the game expects, limiting how much the pink enemies move.
Both are useful for dealing with the general hell you'll have to go through to get this game's medals.