Your main character -- which you choose between a man and a woman -- starts the game about as down as they can be. As a matter of fact, they're dead. Resurrected by a fairy, they're charged with the task of storming into Hell and setting right the balance of the universe. See, there are things worse than death.
She looks sweet, but this fairy has horns.
Saying the gameplay is like Baldur's Gate or Diablo is half right -- which also means it's pretty wrong. Yes, it's isometric and you tackle hordes of monstrous entities. You have magic, various weapons show up, and you level-up. However, the way you play is quite different. The difficulty, at least at this stage, is tweaked to make enemies fairly tough. You'll also be constantly ganged up on. Thankfully, you can get into a defensive stance to deflect attacks. Unfortunately, the angles of your swings are a little suspect, so you're often missing your target.
Level layouts are also quite unique. You can travel all over the place, but many areas will equal certain death (again) if you go into them unprepared. There is a set way to go about playing the game; it's just up to you to figure out that path. It's fortunate that you can save at any time, or you'd be in for a world of hurt.
The preview version was pretty sloppy, but that's why it was a preview version. There are several tweaks that need to be made, from balancing to the broken English to the inventory system, but I won't dwell on them. Suffice to say I hope they're fixed by the time the game ships. If they are, Requiem of Hell could find a nice little corner of its very own in the N-Gage library.