0) tap up after opening the key chest, align with it if necessary 1) crouch stab, backflip twice, sidehop left 5 times and target during the last sidehop 2) untarget, target again, jump down and move into the corner 3) crouch stab twice, sidehop left 3 times, jumpslash to clip The most common way is to sidehop left after the clip in order to avoid clipping back into the previous part. This setup isn't too useful for highly-skilled speedrunners but it might be a good time - consistency trade-off.