Ultimate Assassin 2

As, presumably, in real life, killing somebody in Ultimate Assassin 2 is only half the battle - you've got to get away with it too.

Each level contains one lime-green assassination target and several cool-blue coppers armed with pistols, randomised patrol patterns and red viewing cones. Navigate the maze undetected with the arrow keys, stick it to the target, and head for the exit portal once it appears.

Play Ultimate Assassin 2