Well, at least the title isn't inaccurate.
Developed by Lenar and exclusively licensed by Irem as a software title for the NES this action RPG was released in Japan in December 1986 and North America in September 1987, Europe would never get a release, but it was actually one of the earliest RPGs in North America. The game was originally called Hell Bell in Japan, known as and was going to be called Hells Bells in the US, but was changed due to Nintendo of America's censorship policies at the time and to not affiliate with AC/DC's song of the same name.
The plot is boring and only explained in a long block of text at the start of the game. The actual plot is explained here: Prince Myer is about to take the throne of his Kingdom Of Willner when a shadowykaminamed Khan rises from the lake and takes the form of a man. Thekamigreets Prince Myer and informs him that Rubas, the "Devil of Darkness", is about to overtake the kingdom by using seven magic bells capable of summoning an army of monsters. Prince Myer must travel to the northern mountain to burn the Seven Bells in the sacred flame, burn down the seven bell towers in Rubas' magic palace, and, ultimately, defeat Rubas himself to restore peace.
The graphics are poor. The palette is limited and ugly, the enemy designs are either uncreative or ugly or both and the environments are so repetitive that playing with a map of the game on hand is pretty much mandatory to avoid getting lost. Also, the music is very annoying because it repeats from the very beginning every time you leave/enter another room "it makes nails on a chalkboard sound like Mozart!"
There are too many enemies on-screen and they all take upwards of 20 hits to kill while they can kill the player in just a couple of hits. Your only method of attack is throwing a sword, which must leave the screen every time you throw it before you can attack again. Even the manual says "you have no confidence in this sword." Some enemies when killed drop items that are impossible to reach because the enemies often float around the very top of the screen. And every boss uses the same strategy and attacks. In addition you can die instantly from falling off the edge of cliffs, which happens easily due to enemies knocking the player back when they hit you.
The environments are isometric but the characters and items are not. Each dungeon is not only ridiculously big but some doors warp you to the opposite side of the dungeon (think the mazes in Pac-Man or the NES version of Indiana Jones and the Temple of Doom). There's even no in-game map or on-screen instructions. All you can do is just walk around aimlessly and you're getting lost.
When you enter another door in the dungeon, the stack of balls that forms like a centipede spawn in front of you and you'll get hit instantly by surprise and get killed in seconds. There's no way to tell if it’s a trap or not due to the aforementioned lack of an in-game map.
The game's currency is called Ludder. The game never tells you what it is, so you're left to the wayside when it comes to buying stuff. You're very limited in how much Ludder you can carry at once and some of the items in the shops cost almost like the exact amount of Ludder the game allows you to carry. Stores are only found in secret warps that require either a walkthrough or dumb luck to find.
This game does not have a battery backup, forcing you to rely on passwords. The password system only saves which items you collected (health upgrades, bells, etc.) before you die, meaning that every time you respawn you get sent back to the very beginning of the game with all the items you collected from the previous run. There's no way to continue where you left off.
You have to walk into a "sacred flame" to destroy each of the eight bells you get from killing each boss and reach the final area and boss. If you walk into the flame without collecting any bells you instantly die. Once you get the bells, you have to backtrack all the way to the beginning of the tower to gain access to the door that was locked.
After the credits of the game, it says "You are victorious. This story is over. See you next time!", which hints at a sequel, but is pointless because this game never got a sequel because of the negative critical reception the game got.
Don't waste any of your time.