So, I'm not good at programming by any stretch? (Never done it before, in fact...) But I got bored and started trying to learn how to modify the game in DNSpy, since that's apparently best for Unity. Namely, I wanted to modify how the H animations loop in-game. And after some struggling (and crashing the game after some mistakes), I actually figured it out and managed to get every enemy H animation to loop!
Sure, it's not any new animations. It just cycles back to the "stage 2" animations for those that don't have an extra one. But...Got it working, and even made the ones that can deal damage do so after each "finish". (Save for the Christmas ones, which came without it already despite already looping.) They seem to loop surprisingly well, too, which is nice to see! Overall, every enemy can now keep going at you until you break free. Or run out of HP, which will start the applicable Game Over animations.
If anyone wants the modified dll, and if it's allowed, I can attach it to a reply here! Just keep in mind that it won't work on any updates (It is made for v0.88.4 only!), and I'm unsure if it'll work for the mobile version.