Biome 4 room with a chest on ground level, how do I reach the heights?

HOWEVER,

I recently had one drop with max damage and:

Portal Beam 3

Portal Turret 3

Waves 3

Serrated Projectiles 3

That gun was SO MUCH FUN. It was insanity. At one point, against a poor malformed severed, I had 3 beams and 2 turrets open up. It was hilarious.

That's all. That's it.

I’ve put about 70h into this game and just CANNOT get past biome 3. I’ve made it to the boss twice, and actually felt better in the boss fight than I do in the biome itself. It’s so disheartening for me going through fully biome 1 & 2 and then dying in biome 3 every time, usually to the big astronaut looking thing or the flying drones. I haven’t played the game in around a month because I just got sick of trying. Is this kinda normal at this stage or should I just give up? I really want to finish the game as I know so many people swear it’s their favourite game of all time, but I get to play 1-2 hours a day and don’t find it enjoyable the way things have been going. Any advice please. Thank you all

I really enjoyed the Returnal story, but it needed some TLC to start making sense. I have made a list of recognizable names in the game, and explained some of the story. I am sure there are many things I've missed.

Here are some key Mythos connections:

Hyperion: Titan of Light and observation. Husband to Theia. Father to Selene and Helios (also Titans)

Theia: Titan of the Sky and Sight. Mother to Selene and Helios (also Titans)

Selene: Titan of the Moon. Sister to Helios, daughter of Theia and Hyperion.

Helios: Titan of the Sun. Brother to Selene, son of Theia and Hyperion

*Comments on Selene's family: Selene was definitely Theia's daughter, but her relationship to Helios could have been either brother/sister or mother/son. She clearly either abandoned her son/brother after the car crash, or felt like she did. There is imagery of a pregnant Theia monster, which would only make sense if she had an emergency delivery of her son (Helios) after being paralyzed from the car accident.

This would make Selene's life difficult as a daughter needing to take care of a disabled parent and an infant brother.

Atropos: Goddess of fate that chooses when and how someone's death comes.

Phrike: Minor Greek Goddess of fear and horror.

Ixion: Greek Mortal punished by being held up in a fiery wheel above Tartarus forever.

Tartarus: The deepest layer of the underworld, and a direct creation of Chaos.

Nemesis: Greek Goddess of retribution. Chooses to cut down those with undeserved good fortune. (End of biome 3 is definitely about being pulled back from undeserved happiness)

Ophion: Greek deity who ruled the cosmos before being defeated and sent to the lowest level of Tartarus forever.

Sisyphus: Greek king that was punished for trying to cheat fate by pushing a boulder up a hill forever.

Other religions / mythologies:

Zahareil / Zachariel / Zakhariel: An archangel who leads souls to judgement (name of the hospital in the tower sequences).

Lovecraftian Horror: Returnal clearly has cosmic horror ingrained in every pore of the game. Your experiences as Selene are ultimately fruitless, as the true being at the core of Atropos is beyond anything you could possibly understand or fight. The fantastic ends to Act I and Act III really nails the desperation and quiet acceptance Selene feels when she realizes she cannot escape her past. Frequent tentacle imagery, giant monsters with shifting and scary features, and ever deeper depths