The game isn't bad but it does have a few issues.
First, the music is (if I'm not mistaken) the exact same way one as the previews title, and there is one single music for the entire game, which is a shame. Sound also suffers from being repetitive and seeing that the gameplay is repetitive itself also, having at least different musics and different sounds used, would have made a huge difference to break out that monotony.
The game art looks nice for the most part, the inspiration from Heroes of Might and Magic 3 and 5 in the creature design, the background and the dungeon grouping of creatures is very obvious, and as a fan I appreciate it.
However, there is some obvious issues that make the thing look kind of "cheap". For instance, the fact that it's so obvious that the left and right sprites of every single unit is just "mirrored" to the point where the text showing you "missed" a hit becomes "bessim" if the creature is facing left.
All in all, not bad, not great, and just a little more effort in some aspects, would have made a huge difference.