Here's a vid with all the last WRs on the same screen, for the hell of it.

Hidden Trail (AKA Brood Mother Cave) shortcuts [Obsolete?] Requires: Having health before the final plunge due to fall damage Vid:

Just hold to the left and air attack as you pass the platforms. Prevents death from fall damage, avoids getting elevator lever

Shortcut to Brood Mother fight Requires: Fledgling's Blood Soul, Item Mastery skill (General tree, middle branch, 2nd option) Vid:

Use an air attack to kill your air momentum and climb up the left slope/ledge, then cast Fledgling's Blood Soul mid-air and die. The checkpoint will respawn you mid-air and you'll land in the boss fight with full health.

Sliding Out Of Bounds Requires: Sliding Vid: https://www.twitch.tv/koatal/clip/AttractiveOutstandingKaleBibleThump

When sliding through a passage that requires a slide, go to the equipment menu and change weapon. Forces character to leave slide animation and clip OoB.

Village-Valley Wrong Warp Requires: ??? Vid:

While climbing the ladder and transitioning from the Village screen to the Valley screen you can be spawned much higher on the map, near the exit to Secret Trail. Unsure of exact requirements.

Mine platform skips Requires: Any jump height increaser (Recurve Bow, Time Deviation, etc.) Vid:

Cuts out the need to wait around for platforms as much. Might be obsolete in the October patch if you can reach EFC boss via the Limestone Way route.