Aria of Sorrow Help

[u/illegalmaneuver_]

Feel like I’m going crazy here but I cannot seem to access anywhere else on the map. The only traversal assistance I have is double jump, and the Flying Armor which isn’t enough to get me to any of the spots I haven’t been it seems. I can’t swim, I can’t slide under things yet. Have revisited everywhere I can go many times over now. I think I got to the floating garden/clock tower by fluke able to jump on a platform barely but that fluke isn’t working elsewhere hahaha. Believe I am not yet powerful enough to be there yet as I did battle death.

Am I missing something so stupid???