Mutants - quick instructions. 

 Great music in this game or at least I like it. Basically you have to kill all
of these mutant lifeforms. Problem is to destroy them requires you to assemble
the self destruct board and each mutant type guards a piece. You can select
either the rocket cannon for blasting power, the machine gun for faster firing
or the mines which block mutants and when you run out you get the machine gun.
It's up to you to figure out which is the best for each mutant. There are
16 squares of which the first is where the destruct device is. Putting a 
destruct device piece in restores all your lives.