What the lessons are called
Trophy listings give the Revelation lessons sharper titles than the internal flags: Folding (Redacted), Nexus (Taboo), Amplification (Disavowed), Twin Sight (Forbidden), Unbinding (Impossible), and a blasphemous glaive (Unauthorized). I cite those as trophy titles. The in-game popup may word them differently. The point is the same: a Revelation is a lesson, not a key item.
There is no air dash. Sprint, double jump, and the glaive grapple are the movement. People searching “no air dash” are not missing a toggle. Combat exists — you can strike creatures, and Pacifist is a clear without doing that — but the game is not a weapon-upgrade ladder.
Jump height and the red marker
Jumps do not shrink because you failed a quest. If a gap that used to work now feels short, you are missing slide jump, fast fall, or a glaive pull, or you are comparing a powered launch to a standing hop. Slide jump is the hidden one players discover by accident. The developer said it is meant to be found.
A red marker on the time bar, especially at the Depths statue, means the loop is too short for the price in front of you. It is not a damage flash. Pick up crystals, or end the loop and return with a longer start. Starting length can rise from collectibles. The cap on a single loop is 13 minutes, not 13 hours.
Questions this page answers
Does Echo Weaver have an air dash?
No. Sprint, double jump, and glaive grapple are the movement tools. Slide jump is a hidden bonus, not a dash.
Does Echo Weaver have combat?
You can strike creatures. A clear without striking them is the Pacifist achievement. There is no weapon-upgrade tree.