The original Overlord game was essentially a cult classic and I gladly consider myself one of those that absolutely loved it. I actually prefer how the original game handled some of the aspects such as armor/weapon upgrades. The upgrade options make more sense, but I felt you had to grind for money way to often and just ended up almost skipping it entirely.
The addition of mounts for your minions was actually amazing and probably the main thing that sets this game above the original. My main complaint with the game is honestly it just doesn't feel like it is as fleshed out as it could have been when it comes to things like controling the towns. I loved putting down a revolt, but since it only happens once per town it isn't even really a spoiler. The mistresses are handled the way they should be.
The magic felt weak for some reason to me. The spells help and all, but I never really felt like an all poweful cast sacrifcing minions for personal gain. I enjoyed the idea of minion level up system and bringing back high levels from the dead, but to be honest I never used it.
The game still has the same minion types as the original which is very balanced still. The tactics of killing commanders and using catepults was very enjoyable. The ability to mind control a minion and lead an assault or stealth mission was great. The games dark humor is always enjoyable. It still seems to have choices which are essentially evil vs chaos evil.
The main thing that I wish it had more of was funny bosses like Melvin Underbelly from the original. I did als find it strange that blues never got a mount when I kept thinking they would get a frog or a slug mount. Overall the humor and variety of gameplay make it a neat nitch market title.