Sine Mora, get hit and your power ups fly out of your ship, this is nothing new in oldschool shmups, however what the oldies did right and Sine Mora doesn't is the power ups bounce off the edge of the screen, the enemies stop firing and you get a couple of seconds of invulnerably to get you a chance of collecting them, because without your powerups the game becomes really difficult.
So with Sine Mora if you get hit when your ship is at the top or bottom of the screen half your pwer ups vanish instantly, plus you have to quickly race to collect what you can, no good if your in a boss fight and you have to quickly try to navigate a mass of bullets to do so which more often then not results in getting hit a second time.
This wouldn't be half as bad if I could just not bother collecting the power ups and sticking with a peashooter, but since you are on a timer which on harder difficulties is very stingy makes bosses impossible to beat with a peashooter.
Honestly what a shitty and broken game it is.