Hi Prinny, I'm just now reading through this so apologies for the delayed (2 years apart) response. The game is made in Godot 3.x versions, and don't get me wrong, it's a very lightweight and optimized engine, especially for 2D. However, there are some bad optimizations in game particularly with the explodable vessels that give half hearts and shatter into pieces. They are poorly optimized because there wasn't a clear way of doing this in Godot 3.x versions, so I created a workaround at the expense of more CPU usage..

The game also has some CPU and GPU-heavy shaders and isn't your typical pixel art game in that sense. Let me know of any other Qs - thanks!