unset %hp [ $+ [ %nick1 ] ]
  unset %hp [ $+ [ %nick2 ] ]
  unset %specbar [ $+ [ %nick1 ] ]
  unset %specbar [ $+ [ %nick2 ] ]
  unset %sharks [ $+ [ %turn1 ] ]
  unset %sharks [ $+ [ %turn2 ] ]
  unset %kanons [ $+ [ %turn1 ] ]
  unset %kanons [ $+ [ %turn2 ] ]
  unset %frozen [ $+ [ %turn1 ] ]
  unset %frozen [ $+ [ %turn2 ] ]
  unset %nick1
  unset %nick2
  unset %turn1
  unset %turn2
  unset %turn11
  unset %turn22
  unset %schiet
  unset %heal
  unset %uzi1
  unset %uzi2
  unset %pijlenboog
  unset %kanon
  unset %R
  unset %shotgun
  unset %sniper
  unset %hai
  unset %N
  unset %J
  unset %heal
  unset %Bazouka

You can unset multiple vars in one line btw:

  unset %a %b %c %d %e %f %etc

Or as firstmate suggested, you could name them like %shoot.Bazouka %shoot.heal %shoot.etc and then just do "unset %shoot.*"