Neat concept so far. I'm a little sad the game is so short even. I'm not really seeing the point between choosing between wolf/slime, though I imagine that will change as the game develops? The only real thing I could think of is possible performance issues having a ton of slimes vs having half the wolves in the image moving around depending on whether or not you cap how many show up.
My only critique I would add is please change how the story pops up, or add a button you have to click to continue to the next section of dialogue. Especially seeing how clicking plays a big role at the moment. I'll be clicking and suddenly boom story pops up and I've already clicked past 1 or 2 sections of dialogue. Now I just have to skip the rest and read the log on the bottom right (easier than replaying it..)