Ok I think I get it ! You were expecting something like vampire survivor maybe when the hp bar goes down when you get hit ?
Because here when you get hit there is a big explosion killing all enemies around, the game says ouch, and there is a red flash. So it's I think fairly apparent that you got hit.
Or maybe you mean that the colliding box isn't obvious ?
And yes it tends to have a lot of enemies I agree. Again, thanks for your feedback!
So I added a lot of different feedbacks to the lane changing mechanic. That should make it a bit more obvious hopefully
The details are available here https://the-workshop-geek.itch.io/particulitix/devlog/1082980/changing-zones-is-...