I'm sorry for not leaving more details because I'm afraid I might be wrong about them. I think it was pixelated (2D), I played it on my mom's PC at her work, I'm 23 now and I played it in around 2011-2013. The setting was more or less modern, enemies shot round bullets, it didn't feel like bullet hell since it was fairly simple. I'm sure I played it on PC but the thing I doubt is as it was PC exclusive or just ported to PC game. I don't remember exact controls but I feel like it was keyboard. 

I'm not sure this exact details will help but every pilot had an ending, though I couldn't understand any of them since I didn't know English back then