You are Doctor Who and you need to kill all the daleks.
Moving
To move him you click on the game grid and he will follow.
The Daleks will then move one square towards him, if two or more of them go onto the same square they will crash and burn.
Teleport
You can teleport him to another part of the grid by pressing the teleport button.
The Daleks move straight after the teleport.
Blast 'Em
Pressing the blast 'em button will destroy all the Daleks in the 8 squares around him.
Next Level
When all the Daleks have been destroyed Davros will send more Daleks in his bid to kill him.