You perfectly describe Rain World!

You’re a small and insignificant creature in a dangerous and unforgiving ecosystem. You’re not saving the world. Even the enemies are playing by the rules. Evading enemies is often the safest option, but sometimes you must do a risky confrontation. It’s rare you even take down an enemy at all. Deaths are punishing. It’s open world, but the random placement of enemies often dictate the path you’re taking.

It has also one of the most intricate AI systems in any game. There’s YouTube videos describing it in detail, but I recommend to not watch them and go into the game clean.