This was fun! Plays nice and quick to tempt me back for another run.
I'd say it does use the limitation - as an endless game there's no win state, so you'll always die at the end of a run :)
As you've asked for feedback on the game page, there's a few things I'd suggest:
- Add collision at the edge of the screen for the player - I was able to run outside of the visible area
- Add another enemy type - something with a ranged attack would be ideal - to force the player to vary their movements beyond just running away.
Good luck with future development on this!