Critical response to Beware! was generally favorable and positive. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album has received an average score of 74 ("Generally favorable reviews"), based on 32 professional reviews, and the average user rating for the album is 8.5 (out of 10) based on 12 users' votes.
Tracks 12-13 were only available on the initial pressing and have been removed from subsequent pressings. These tracks have been released as a digital download single and the new eleven-track version of Beware! has an alternative cover. These changes were instigated by Will Oldham who felt that I Am Goodbye is more suitable as the final track.