Yeah and it's basically nonexistent cuz they couldn't be fucked to generate a few more variations.
Double it, they're not even animated, they just change the character position or sprite by inches, you can test this just by letting the starter monsters bang you or using failing temptations of random events.
None are animated as far I saw, to top the offense, it reuses the same animations for most monster, and the unique ones like slime is literally a single non animated sprite that ends soon on next turn.
That's serious because if they're using AI, it's no excuse to have so few, as someone who used AI image generation (and still uses sometimes) because I wanted to see how exactly it worked before judging
Making the perfect prompt isn't easy how it looks like... Still need to pray and make the AI not mess up with your configs, lora, etc...
But it is farthest of hard, in fact, it is only time consuming, and it don't take literals 30 minutes to prepare a batch of it.
You could open any generative ai and toss pixel art lora, and in few minutes with minor patience you can replicate this man's 'art' and make even bigger batches.
Honestly, the game itself looks promising, but it's laughably unbalanced, hope dev isn't taking those as hating, I want to like this game, but on that state it is unacceptable.
The only excuse for taking time is if his loras and references images are made with his own original art, but still shouldn't take long once he already made the first batch correctly, the AI gonna get what you want and rarely gonna repeat it mistakes.