Unless I'm missing something, this game is very grindy. Attack ships by going in a circle, get the random item and map. Hope you get enough money to slowly raise your equipment, fight stronger enemies.
It's a tad too pixel perfect. There's no room for error as the levels increase, and the fun starts to drop because it becomes a game about jumping at the exact millisecond. Also the third part of level 14 is almost impossible to see.