[2] Lizzie Cooper-Smith of Rock Sound praised the group for refining their "unique brand of controlled chaos" throughout the record and showing confidence in their distinct musicianship to "easily fuse brashness with catchy melodies, complexity with moments where you can catch your breath", concluding that "This long-awaited second album isn’t just thrilling from start to finish: it might also be exactly what rock needs right now.

"[9] Dave Simpson of The Guardian said that the group retained their trademark musicianship while also showing maturity by adopting "rave-type breakdowns, euphoric pop rushes and a tender ballad" throughout the album and displaying youthful textures that are inspired by English alternative rock acts like Kate Bush, Madness and Siouxsie and the Banshees.

"[4] Haydon Benfield of Renowned for Sound, despite pointing out the "highly repetitious lyrics" found in "Insomnia", gave praise to Norton's production for highlighting the band's push to new musical territories on "Like a Battery" and "Run with the Rhythm" while showcasing their "punkish high-energy affairs" on the singles and lead singer Becca Macintyre for having a compelling presence in her vocal delivery, concluding that "[I]f you’re after a loud, fast, and fun album you can’t go past Marmozets’ Knowing What You Know Now.

"[8] AllMusic editor John D. Buchanan commended the band for going with a more "straightforward" approach with their sound on their sophomore record, praising the instrumentation throughout the track listing and Macintyre's vocal range going from "breathless gasps and falsetto peaks to deeper notes and theatrical yelps", concluding that "[I]t sounds as if the band have outgrown the need to prove themselves with overt technicality and are happy to just enjoy rocking out.

"[3] Conversely, Cady Siregar from Drowned in Sound gave credit to each track for having pulsating energy and strong vocals, but felt there was an overabundance of angst throughout the production, lyrics that caused the songs to blend with each other and a lack of respite and wisdom to calm the listeners.