While I loved the first Overlord - the second installment feels undercooked in every aspect. There are many good ideas to be found, but they all feel lackluster in practice and the general feeling is lost from the first game in many regards. If you love the first one, you should still find some fun moments - but do not compare the two.

To be found:
Worse music (and the wrong music at the wrong time?)
Worse design and biome choices overall
Worse/frustrating gameplay mechanics
Worse pacing

Better graphics (which doesn't help since the design is worse)
Some funny moments

TL;DR
If all the ideas were implemented and expanded fully, this could have been a much better game. Do try it since there are some fun to be had, but expect frustration and do not compare it to the first game.

5/10