Somewhat the second game is worse than the first, sure it has more features on it like visible trophies and the city mini-game, it also dont have the bad scalling of the repeatable upgrades, and you can reach the 100k for the last upgrade much faster than in the first game.
But the clicking lag is still here, it's less annoying this time. The UI looks terrible, even with the zooming option it dont really make it any better.
The city mini-game that is the new thing in this is somewhat good, but at the same time not so much, it does help you gather resources, but after you reach a certain point of kills per second and you overwhelm the citizen respawn rate, many knights that i dont think you can win will clear your whole undead army regardless of the amount of skeletons and necromancers that boost skeleton damage.
So overhall the game has a better look on it considering the art style, but it gets much worse because the UI and how it was placed.