Did you unlock an ability early? Echo Weaver uses knowledge gates

Why grappling may work before an explanation

A new Steam player had used Folding early, then found grappling available and accidentally earned a slide-jump achievement. They wondered whether they had missed an unlock scene.

The developer interview describes a world gated by what the player understands, rather than collected ability unlocks. An early successful action is consistent with that design; it is not proof of a skipped mandatory item.

Check whether you can reproduce the action

1. Note the action you performed and your configured controls.
2. Try to identify the input you used, rather than looking for a missing unlock cutscene.
3. Check the knowledge progress screen for what you have discovered. The interview says it tracks discovered knowledge, but does not establish that it contains every button combination.
4. If you cannot repeat an accidental slide jump, seek the specific instruction. The new thread had no verified combination when checked.

Knowledge and room state do not persist in the same way

The interview distinguishes remembered discoveries from the world resetting. A wall broken during a loop can return on the next loop even though you remember the route. An ability you know how to use and a currently opened passage are therefore different checks.

Normal grapple and grappling to the Glaive are separate

If normal grappling works but the Glaive has no grapple indicator, compare the successful short returning-throw check. That addresses a specific action mismatch, not an item unlock.

This page does not supply an all-abilities command list, a slide-jump combo or a Demo-save transfer procedure. Its answer is whether an early discovery alone requires abandoning the run: the stated design gives no reason to do that.