Without Warning was met with generally positive reviews. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream publications, the album received an average score of 78, based on nine reviews.[7] Aggregator AnyDecentMusic? gave it 7.4 out of 10, based on their assessment of the critical consensus.[6]
Sheldon Pearce of Pitchfork praised the chemistry between the rappers, its Halloween aesthetic and Metro Boomin's production, stating: "It's short and cohesive, an enjoyable and uncomplicated 33 minutes of sheer exhilaration, filled with stings, itches, and cold chills. In one form or another, the collaboration comes as a surprise to all of us, arriving suddenly and carrying within the electricity and satisfaction of a good scare."[12] Marshall Gu of Pretty Much Amazing said, "The best song comes early in "Ghostface Killers", with an excellent rapped chorus from Offset that's been running through my head since the tape dropped and Travis Scott sounding excellent as always even if he doesn't say much anything at all".[13] Gary Suarez of Consequence said, "Where the Super Slimey too often felt like a requisite Xanax-blasted victory lap, one notably soft on hooks [...], Without Warning exudes vitality and menace".[8] Online publication HotNewHipHop stated that Without Warning is "the rap equivalent of a slasher flick: gory, over-the-top, and a lot of fucking fun. Most of the horror vibe comes from Metro, who expertly throws in demented laughing, chainsaws, gunshots, wolf howls, creepy music boxes, and Rosemary's Baby-level haunting backing vocals as backing tracks to his instrumentals. And goddamn, those instrumentals. Big bells, eerie piano, reverby bass, and sci-fi synths set the tone, but the way he deploys them shows the most progress. There are no predictable build-ups, and the way he tailors the ins and outs of his beats to each rappers' flows and emphases is impeccable".[11] Chris Gibbons of XXL said, "Without Warning is more than a Halloween novelty. Offset and 21 Savage turn their differences in delivery into an undeniable chemistry, while Metro Boomin's production gives the project a proper Halloween-inspired sound so their comparisons to classic villains like Freddy Krueger and Jason Voorhees aren't in vain".[16]
Andrew Matson of Mass Appeal gave the album a favourable review, commenting: "It's a bit weird to joyfully toast an album that's so dark, and contains a lot of murder/guns talk. But what's most apparent here is two artists in love with their art, rapping from gangster/villain points of view. Both are experiencing crazy levels of success they might never have imagined, both are carving their own unique lanes through rap while staying true to their styles. It seems to have worked out naturally that they make music that can be extremely Halloween-ish, and that's the day we get Without Warning. What else can you say about why this project works? Sometimes shit lines up, and that's a beautiful thing."[17] In a mixed review, HipHopDX's Trent Clark stated: "Like most projects that get recorded without the guise of a meticulous A&R, Without Warning's billing never exceeds the expectations of any artist—rapper or producer—let alone offer a glimpse of what allows these individuals to rank amongst 2017 Hip Hop's most popular figures."[10]
Without Warning debuted at number four on the US Billboard 200 with 53,000 album-equivalent units, 11,000 of which were pure album sales.[20] It is 21 Savage's second top 10 album, and Offset (as a solo artist) and Metro Boomin's first top 10 album.[20] Six songs from the album managed to chart on the US Billboard Hot 100, led by "Ric Flair Drip", which peaked at number 13, becoming both Metro Boomin and Offset's highest charting song as lead artists.[5][21]
^ abGu, Marshall (15 November 2017). "Reviews: Metro Boomin". Pretty Much Amazing. Archived from the original on 16 November 2017. Retrieved 16 November 2017.
