First off, thank you for creating this great act mod. The enemies are fun to fight, and the events are interesting. However, if I may suggest, I recommend adding additional custom background music and battle background to make it more distinctive compared to the current base (City).

For now, I could recommend music tracks, as I'm having difficulty finding high-quality battle backgrounds that could fit.

General act theme: https://www.youtube.com/watch?v=I-FP1bM4gIo
> I chose this song because it has a "mystical" feeling to it. The Elementarium also features events and themes revolving around gold, which I feel this song evokes, in a way. It's like walking through a field of crystals and rare metals.

Elite battle theme: https://www.youtube.com/watch?v=kwNpdYPs0BU
> With the RPG-boss-like enemy designs of the elites (Nice WOW reference for the firelord, by the way), I think it's fair to pick a remix of the battle theme for a classic RPG to go with the battles. The intensity of the theme also reflects well on their greater power compared to act 1 elites.

Golem Emperor battle theme: https://www.youtube.com/watch?v=KAUBPx2YhKQ
> Aside from the incidental title similarity, this battle theme I feel evokes the menace of a malicious opponent bearing the title of "Emperor". There are similarities I found in both this Emperor and the Golem Emperor, as both creates past enemies to help them attack you.

Fire & Ice Phoenix battle theme: https://www.youtube.com/watch?v=VJqnvMff9SI
> Quite like the Emperor battle theme, I chose this for the similarity of both the source (Ho-Oh) and the battle itself. This theme, I feel, creates the image of a fast-paced battle against a majestic phoenix - phoenixes, in this mod's case. It also introduces a diversity in music style - slow, heavy, menacing for the Emperor, while this one is faster, and more oriental-sounding.

Golden Dragon battle theme: https://www.youtube.com/watch?v=cOlgo8frvrU
> Well, I admit I picked the boss battle themes based on some form of similarity with the source. This one in particular evokes the aggression of the hunt against a deadly dragon - or in the source case, a Royal Griffin. The pace of the song is a bit faster than the Emperor's, but slower than the Phoenix/Ho-Oh, which makes this a good moderate point.