Set is a burning forest, one of the main hazards in this stage are the mines. When you walk over them, they will explode about half a second later, so don't wait around. Along with the usual soldiers, you'll come across ones with larger guns who sit in place, firing in small bursts.

In addition to the mines, the other hazard of this stage are the canisters, which are marked with "DANGER" on them. If you run over these, they will explode a second or two later, so jump or run to avoid being hurt. Make good use of the blocking technique to stop the soldier's shots.

Near the end of the stage some other enemies start appearing, such as troops with mortar launchers. Their shots will travel in an arc, but they can be blocked. The boomerang enemies last seen in round 2 will also make an appearance here.

The robot seen blasting off into the sky in the previous round will appear as a guard to the Neo Zeed factory. However he's simple to beat and only has two attacks. He can charge across the screen quickly, but this is easily avoided with a standard jump. His other attack will have him stand still and fire lasers at you in bursts of three, but these can be blocked.

The robot cannot block your shurikens and you can dive kick him every time he uses his dash. He'll turn redder the more he is hit, and will eventually explode.

The next stage takes place inside the factory. It is made up of several rooms, and inside each one there are floors you must destroy to progress. To destroy them, break open any item boxes you see, as they will contain bombs. When the bombs go off, they will destroy the floors, and you can move on. The enemies throughout this stage are the soldiers.

As well as using the bombs, you'll also need to make some wall jumps to get higher up into some of the rooms. The golden pipes can be grabbed onto, but be wary of dropping down off them as you can fall straight into a pit.

The further you get into the factory the more difficult is gets, as some of the bombs will destroy good chunks of the floor. Keep a look out for the small platforms, as some of them will take you across the pits, but a few will just drop when stepped on.

One of the rooms involves moving upwards, but it isn't too difficult to work out and there are no pits to fall into. Aside from the bombs, the only things that can hurt you are some of the soldiers.

After getting to the very top of this room, run to the right to find the exit. Inside the next room, you'll hear something stomping towards you and everything will shake. A pair of red eyes will then appear...

The boss, a giant robot dinosaur, will appear. As well as being able to breathe fire everywhere around it, the boss will also fire green projectiles at you in bursts of three. You can block these, or use shuriken to destroy them. Whenever the boss stomps around, it will cause some debris to fall from the top of the screen, so be ready to move.

You can stand on the hands of the boss if you want, but this isn't a particularly great idea and you are probably best off trying to stay at the opposite end of the screen to the boss instead. Keep throwing shuriken at the head of the dinosaur to destroy it, but even when this happens, the battle isn't over yet.

The dinosaur's true weak spot is then revealed, which is a small computer in a dome, located where the head used to be. It is trickier to hit, but the boss can no longer breathe fire and no objects will fall when he stomps around. The only difference is he will sometimes fire projectiles in batches of six rather than three. It doesn't take too many shuriken to destroy the computer and finish the boss off.