PoR - Can't progress further

[Kermit9187]

From the detailed spoiler log below, I have:
1: Portrait to City of Haze
2: Portrait to Nation of Fools
2: Puppet Master (Used extensively to gain a little more vert jump height)
2: Push Cube
2: Portrait to 13th Street (This currently has the puffy clouds blocking me from entering - need to finish another world first?)
3: Strength Cube (Used this one time only for pushing a green outlined heavy block)
3: Portrait to Sandy Grave

Stuck at present, because Puppet Master can only get me a little verticality. Don't have any more movement options, unless I am missing something. I assume I have ignored an area or perhaps I am not using some kind of movement glitch etc. Any idea what I should be collecting and how? I have beaten all available bosses to me, no creature stands in my way.

Save file from TwilightMenu on New 2ds: PoR WhiteRapidusAutomaton.zip

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Seed: WhiteRapidusAutomaton, Game: Portrait of Ruin, Randomizer version: 1.4.5
Selected options: randomize_pickups, randomize_boss_souls, randomize_portraits, randomize_maps, randomize_enemies, randomize_bosses, randomize_enemy_drops, rebalance_enemies_in_room_rando, revise_item_descriptions, unlock_all_modes, reveal_breakable_walls, remove_area_names, unlock_boss_doors, start_with_change_cube, por_nerf_enemy_resistances, skip_emblem_drawing, fix_infinite_quest_rewards, always_show_drop_percentages, allow_mastering_charlottes_skills, show_map_markers_on_top_screen
Difficulty level: Normal

Progression pickup locations:
1:
Portrait to City of Haze: Master's Keep (00-0A-13_03)
2:
Portrait to Nation of Fools: City of Haze (01-00-04_07)
Puppet Master: City of Haze (01-00-18_00)
Push Cube: City of Haze (01-02-11_00)
Portrait to 13th Street: City of Haze (01-02-05_00)
3:
Cog: Tower of Death (00-07-01_00)
Strength Cube: Nation of Fools (05-00-14_00)
Acrobat Cube: Entrance (00-01-03_01)
Sanctuary: Great Stairway (00-05-04_12)
Portrait to Sandy Grave: City of Haze (01-02-01_00)
4:
Portrait to Burnt Paradise: Buried Chamber (00-02-17_00)
Toad Morph: Great Stairway (00-06-0C_02)
Portrait to Forgotten City: Buried Chamber (00-02-0A_00)
Portrait to Dark Academy: Entrance (00-01-10_00)
Portrait to Nest of Evil: Great Stairway (00-03-07_00)
Portrait to Forest of Doom: Master's Keep (00-0B-00_03)
5:
Superjump: Forgotten City (04-00-11_00)
Speed Up Spell: Forest of Doom (07-01-14_00)
6:
Double Jump: Sandy Grave (03-00-13_01)
Owl Morph: Sandy Grave (03-00-13_02)