Hi guys! Glad you like the video!
@Akira: sprites size is in discussion. It´s a matter of balance and therefore will be tackled when all technical issues are out of the way and "only" enemy attack patterns are left to do :-) As for bullet rain: I´m pretty aware of Caves shooters. Please keep in mind that I´m a sole developer, working on this project in my sparetime. No publisher paying for precious time, no years of experience in designing attack waves. Will do my best though to convince and surprise you! :-)