* SugarWiki/AwesomeMusic: Some of the boss musics fall under this. ([[http://www.youtube.com/watch?v=oWjwGRIFzBw Here]] is Boss 4's.)
* DemonicSpiders: Helicopters, they shoot a stream of shots up to your character and can be hard to avoid. They also have quite a bit of health. Not to mention that those bullets can ''break through'' any object you're using as a shield and ''still'' hit you...
** Unless it's the Amiga version, where they can only shoot directly straight.
** White-uniformed soldiers, they do a combat roll when you hit them, becoming invulnerable to attack. They take three hits to die. And they chuck grenades at you...
* GoddamnedBats: The regular soldiers. They appear in mass numbers and fire randomly.
** When the truck boss moves offscreen, he actually stops. You won't be able to shoot it, but your grenade explosions ''will'' damage it. So all you have to do is chuck grenades at the truck until it moves offscreen, then chuck grenades at the left.
** If you complete a level just as your character gets killed, the death doesn't count and you keep that life.
* HardLevelsEasyBosses: If you have an autofire emulator, you can destroy most of the bosses in seconds. The fact that the bosses are never accompanied by [[GoddamnedBats regular soldiers]] or vehicles also makes them easier to survive at times.