Teenage Mutant Ninja Turtles II: The Arcade Game/Scene 3: Let's melt snow and rebuild N.Y. City.

New enemies

 * Cyborg Snowman: NES owners should feel a tingle of pride knowing these enemies are exclusive to this version of the game only. They aren't too much to handle, since the homing missiles they shoot are easily destroyed. They're even weaker after the snow crumbles.
 * Light blue Foot soldier: the childish Foot Soldiers in the Central Park stage will resort to throwing snowballs at you. Strangely, they do the same damage as if they were throwing a knife. Treat these guys like you would any other projectile enemy.
 * Depressed Foot: another cousin of the Wimpy and Lazy Soldiers, they use the exact same killer attack moves. It doesn't take much effort to put them away.

Dangerous objects

 * Ice Boulders: at the beginning and the end of the snowy area, these frozen rocks will rain down on your group. Stay out of the air and watch the ground for shadows, since two or three can sometimes fall on you in succession.
 * Snowplows: once in a while this public utility vehicle will rush by on the lower half of the screen. Too bad if any unassuming turtles are standing in the way of it.
 * Snowy Manholes: some of the sewer pitfalls are slightly obscured by the frosty precipitation, but they aren't difficult to spot. They damage you just like any ordinary fall would.
 * Oil Drums: while these explosive objects are helpful for taking out your opponents, be aware that they can harm you if you're in the blast radius. Jump kick away from it after you strike it and watch the fireworks from a distance.
 * Parked Cars: some of the vehicles in the parking garage will start without warning, making trouble for any good guys in the way. If you know which cars move, you should be able to avoid them with minimal difficulty.

Helpful objects

 * Speed limit sign: you can attack these to propel them through enemies that are level with the sign. Instantly kills enemies.

Snowy Central Park
When you emerge from the sewers, you'll be surprised to find it's been snowing. Anyone who's played the actual arcade version will realize they're in a brand new level. Before you actually fight any Foot Soldiers, you'll encounter a storm of giant chunks of ice. Keep your eyes on the ground, and move quickly if you see a shadow. It's very hard to pass this without taking a hit, so don't worry. The Soldier battles are pretty standard. The ones that chuck snowballs don't act any differently from the Knife Throwers or Boomerang Guys. Just be careful of the partially hidden manholes, which for some reason are everywhere.

The snowmen are easy, since all they do is fire little rockets. A couple of Specials followed by a regular attack when they melt will do the job fine. Near the end of the stage another hail of ice will occur. This one is a little shorter than the last one. Just make sure you're not jumping so you don't get hit without warning. Just past the last group of Soldiers you'll find a Boss.

You'll realize he's responsible for the changing weather shortly after he starts throwing those ice blocks at you. The Bebop/Rocksteady strategy works well here. You should hit him before he catches the ice falling from the sky, but if you don't, he'll drop it anyway. If you find yourself fighting him in the center of the screen, there's another neat way to damage him. Jump kick him, and as soon as you land, do it again in the opposite direction. He'll most likely try to escape to the corner, but you'll catch him each time. It's difficult to keep this going continually without messing up somehow, but he can't last too long if you use these techniques.
 * Boss&#58; Tora

Parking Garage
After you destroy the weather-changing device, you'll proceed to the parking garage. You'll run into more of the same Foot Soldiers you've encountered in the earlier levels, but they come in big groups. The speed cones in the beginning make nice weapons against the guys you find there. However, if you leave the cones alone, the enemies will only enter one at a time. The oil drums are actually more of an annoyance than anything else. Even if a Soldier walks right next to it during the explosion, it's not guaranteed he'll be burned. The speed limit signs are also useful against side attacks.

The bad guys have a couple of new tricks up their sleeves as well. They'll pop out of vans towards the end of the stage, but before you reach that point you'll have to avoid being run down by their generic Japanese cars. These are found one screen over from the breakable signs. Just before you step in front of them, jump forward and kick back to the left at the last minute. The car should speed along on its way without you underneath it. Look out when you land, though, because there will be some House Cleaners hiding behind the cars, and they can be a pain. Not much farther after this you'll see April guarded by another NES-specific Boss.

This lovable guy has returned, but luckily he's not much harder than the last bout. Hold off on picking up the Pizza Slice unless you're seriously low, since you might take some damage from him. Try to lead Baxter into the corner and position yourself so his sparks (or whatever they are) miss you on both sides. Get some extra air on your Special Attacks by hitting A slightly before B and holding it. (This is VERY difficult to pull off consistently, but if you're standing in the right spot Baxter won't move.) You should jump just high enough to tag him with your weapon. If you can't seem to make him move where you want to, you can always use the traditional jump kick method, but he can sometimes hit you like this. If he swoops in to swing at you with his fly swatter, you can catch him with a Special, too. He can't stand too much abuse, so you should be able to get past him fairly quickly.
 * Boss&#58; Baxter Stockman (fly form)