Was nice. I enjoyed it a lot. Very responsive! But I agree that this can be expanded upon;
Some enemies with white eyes in the dark can warn you that an enemy is near, and since sonar only hits the wall, walls become obstacles to reveal enemies.
Common avian predators include owls, hawks, eagles, and falcons, which often hunt bats during flight or at roosts.
Mammals such as raccoons, cats (including domestic and feral ones), and foxes may prey on bats, especially when they are roosting or grounded.
Reptiles like snakes and crocodiles also target bats, particularly fruit bats or those near water sources.
In some cases, arachnids (such as large spiders) and even certain insects can pose threats to smaller or vulnerable bats.
Anyways! Great work for your first game!