When I reached around 2800 points on my last run no more enemy came.
The game is very fun! The concept is a great implementation of the theme and works super well, I like that adding some +1 Life cards to your deck is very double edged as you might end up with a poor arsenal at some point and die exactly because of that. Control feels good, the speed of the dragon, enemies and bullets feel right and the enemy patterns are diverse and right on point for the game, very fun to interact with.
I think the bullets should visually stand out more.
Very cool!