Here is the full list of all 13 Lazer Cops achievements.
Complete a level on 'Versus' mode
Give this groovy dude his last dance
End the mad surveillance of Spynet
TAKE THAT CHOPPA DOWN!
Wanted, dead or alive
Complete a level on 'Chained' mode
Complete a level on 'One-Hit' mode
Beat the game
Complete a level with 4 players
Complete a level on Hard difficulty
Complete the 2 tutorial levels
Beat each level on each Hard difficulty
Complete a level with 'One-Hit' mode on Hard difficulty