The research´s main objectives were to develop a longitudinal assessment of students´ use of language learning strategies, examine their English proficiency and report their perception of online English instruction during the new normal in Lima-Peru. The sample involved 50 undergraduate students who participated in an online high intermediate English course during 16 weeks. A mix-method research was established based on the sample size and the research questions. For the quantitative part, two comparative groups were evaluated using two instruments which were chosen from the literature review: (a) the Oxford (1990) Strategy Inventory for Language Learning (SILL), and (b) the Oxford placement test which measures English proficiency. The findings revealed that both groups reported both weak and strong language learners, and metacognitive strategies were the highest used among them. Also, the group of students who actively practiced LLS activities not only increased their overall LLS use but also improved their English proficiency. With regard to the qualitative part, a phone call interview design was implemented to 10 participants who generally reported a positive experience in terms of teaching support, feedback quality, participation and class recording availability.