Even the good songs aren't that good. The title track is campy and overlong, Be Quick or Be Dead is notable only in its aggression by Maiden's standards, Afraid to Shoot Strangers is good but even it has that forced "Afraid! Afraid to shoot strangers!"x20 part with those shit-tier keyboards. imo the only great songs are the deep cuts, particularly Judas Be My Guide and Chains of Misery. Factor in the number of songs that are actually awful (From Here to Eternity, Fear is the Key, Childhood's End, The Fugitive) and it's a pretty poor album. The worst song on the original press of Killers (i.e. Twilight Zone aside) is still leagues better than 80% of Fear of the Dark.
It's not totally awful, but it's a 5/10 at best.