Batman: Return of the Joker (Game Boy)/Stage 1: The Sewers

The Sewers
This is the first stage and its one of the easiest stages. Once you start you'll immediately see some batarangs and you'll put your wall climbing technique to use. The first enemy will also be there who will try to stop Batman. You will soon meet yet another enemy of Batman, water. Water will rise up and down and will slow down Batman and begin to drain his life. After that water you will run into some more that just drops down, just look for the right timing and jump through it. Continue forward and you have now reached the second section of the stage. If you look above there will be many items so all you have to do is continue to the end of the section and wall climb up to the top of the pipes. Travel back and grab the items and continue forward and wall climb up out of the sewers. Once up there do a little more climbing to take the best route. While you are up there you will have to do the "Web Slinging" technique to travel through the ceiling, but if you aren't skilled enough you have to take the bottom route with the moving platform. Eventually there will be a point where there are conveyer belts. Stay on top of them and you'll find a Heart Up to increase Batman's overall life. Drop down but be careful with some boxes that drop because that will be the end of Batman. Go over the pile of crates and you will reach Dark Claw.

Boss: Dark Claw
Here is Dark Claw, the boss from The Sewers. He might be difficult for first-timers or inexperienced players, but get his strategy down and you are solid. Do NOT rush in and attack, he will just strike back and that will just lead to suicide. Provoke him to jump to your location and move out of the way to dodge his attack, then immediately attack him. Do not attack him if you have batarangs, that will make things worse, instead attack with the Bat Hook Punch. Repeat these steps and go for the win.