Deathray

3 clues
Alien arm
Sci-fi weapon
Sci-fi shocker
Similar answers:
Adeath
Adeathinthe
Anddeath
Andeatafeworeos
Andeatnothingbutbread
Atdeath
Atdeathsdoor
Bandeatthebushes
Beattodeath
Blackdeath
Bluthray
Brushwithdeath
Carehalftodeath
Comeinandeat
Cowsofdeath
Deatd
Death
Deathadder
Deathandtaxes
Deathandtexas