In the first paragraph, while you introduce the themes of mystery and tension effectively, you could enhance your argument by providing more specific examples from the text to support your claims about societal repression and its effects on Dr Jekyll. For instance, you could mention specific moments in the text where Jekyll's internal conflict is evident. This would strengthen your AO1 score by demonstrating a more critical engagement with the text.

In the second paragraph, your analysis of the quote 'I concealed my pleasures' is insightful, but you could improve the clarity of your argument by explicitly linking the concept of repression to the broader theme of mystery. Consider elaborating on how this concealment creates a sense of mystery not just about Jekyll's character, but also about the societal norms that force him to hide. This would enhance your AO2 score by showing a deeper exploration of the effects of language and structure.

The third paragraph presents a strong analysis of the atmosphere, but it could benefit from a more direct connection to the theme of tension. While you discuss the desolate atmosphere, try to explicitly link how this atmosphere contributes to the overall tension in the narrative. For example, you could discuss how the time and setting foreshadow the events that unfold later in the story. This would help improve your AO3 score by creating clearer links between context and text.

In the fourth paragraph, your discussion of Poole's loyalty is intriguing, but it could be more effective if you provided a specific example of the question Utterson asks. This would clarify the context of Poole's actions and strengthen your argument about the mystery surrounding Jekyll's identity. Additionally, consider discussing how this loyalty reflects the societal pressures of the time, which would enhance your AO1 and AO3 scores.

The essay presents a clear understanding of the themes of mystery and tension, effectively linking them to the societal context of the Victorian era. This shows a good grasp of the task and the text as a whole.

The use of textual references, such as the quote 'I concealed my pleasures', demonstrates an ability to engage with the text critically. This supports your interpretations and adds depth to your analysis.

The analysis of the atmosphere in the third paragraph is particularly strong, as it effectively uses literary devices like pathetic fallacy to create a sense of tension. This shows a good understanding of how Stevenson crafts mood and setting.

To improve your AO1 score, incorporate more direct textual evidence in your first paragraph to support your claims about Jekyll's internal conflict. For example, you could reference specific actions or quotes that illustrate his struggle with repression.

In the second paragraph, clarify the link between Jekyll's concealment and the theme of mystery. You could do this by discussing how his hidden pleasures create a sense of intrigue not only about his character but also about the societal expectations that drive him to conceal them.

In the third paragraph, make a more explicit connection between the desolate atmosphere and the tension in the narrative. You could discuss how the setting foreshadows the events that lead to the climax of the story, enhancing the sense of impending doom.

In the fourth paragraph, provide a specific example of Utterson's question to Poole to clarify the context of Poole's loyalty. This would strengthen your argument about the mystery surrounding Jekyll's identity and how it reflects societal pressures.

To improve AO1, focus on integrating more specific textual references in your arguments. For instance, when discussing Jekyll's repression, you could include direct quotes that illustrate his internal conflict, which would enhance your critical engagement with the text.

For AO2, ensure that your analysis of language and structure is linked more explicitly to the themes of mystery and tension. For example, when discussing the quote about Jekyll's pleasures, elaborate on how the language used creates a sense of secrecy and intrigue, which is central to the narrative.

To enhance your AO3 score, make clearer connections between the societal context and the characters' actions. For instance, when discussing Poole's loyalty, you could explore how this reflects the class dynamics of the Victorian era, which would deepen your analysis of the text's context.