There is full English support via the English interface, English audio and English subtitles! Note: This latest version of the game supports 16 languages, including English. That's an increase of 5 additional languages compared to 11 languages, including English, supported by the earlier version as noted in the previous language support notification posted in my previous comment below.
Man, they've been doing a lot of these "shoot to the rhythm of the music" types of games lately. Bullets Per Minute, Metal:Hellsinger, this one and I'm sure there's plenty more I missed
Note:
This latest version of the game supports 16 languages, including English. That's an increase of 5 additional languages compared to 11 languages, including English, supported by the earlier version as noted in the previous language support notification posted in my previous comment below.