If you like Demon's Rise, Demon's Rise 2, and Shieldwall Chronicles, there's also Strike Team Hydra, which adds a science fiction skin. It was released between DR2 and SC.
They're all fundamentally the same game, and there is a lot of gameplay similarity and probably the same engine underneath. That isn't a negative - it's a fun engine.
The RPG is very light...it's pretty much a set of tactical battles in a barely-branching tree and you get to level up and reequip your party between each battles.
Fun games! There's many different characters to put together to make your six, and the randomness of equipment availability (think Diablo) is nice. I enjoyed all four.