Ships with maximum weapon/accessory counts less than the game's allowed maximum can actually click and use the first slot after their set of available weapon slots ends. In other words, a ship that says it can use 5 weapons and 10 accessories can actually use 6 weapons and 11 accessories.
I just beat Sands of Destruction a few days ago, and what music do I hear from the first battle? Quite the coincidence, considering Sands of Destruction is from 2008...
Simply horrific timing detection, and several times it doesn't even register the keys I hit, especially on doubles. Also, even after five games, the creators don't seem to understand the purpose of the horizontal lines on the track. They're supposed to match the beat of the song. Try getting someone who knows what they're doing on your team.
Not enough bonus spawns when upgrades are maxed out. I almost feel like I'm seeing fewer pick-ups at this point. Even with a perfect launch and XMAS, I'm still having trouble passing the second-to-last mark consistently, and I'm not even coming close to the last mark, let alone the moon. With nothing left to upgrade, there's way too much left to luck.
>"Captain, why did you murder all those poor fish!?"
>"For SCIENCE!"
>"Well, now that you've eradicated 90% of the Earth's oceanic population, and potentially forced millions of aquatic species into extinction, what have you learned?"
>"Fish carry gold."
Game totally glitched out when I got to wave 40 on Survival. Two copies of third boss appeared, but one was stuck at the bottom of the screen, couldn't do anything, and couldn't be harmed. Shooting my flamethrower started making the remaining ammo increase by one after each shot, instead of decreasing. When my current ammo reached about 110/15, the weapon vanished. Also, the "avoid and don't shoot for 20 seconds" mission wasn't working.
 "CrossFire Madness"){kind=icon}
 "FPS-MAN"){kind=icon}
 "Color Pic-a-Pix Light Vol 2"){kind=icon}
 "Folds -- Origami Game"){kind=icon}
 "Frantic 3"){kind=icon}
 "Anti-Idle: The Game"){kind=icon}
 "Enola: Prelude"){kind=icon}
 "Berzerk Ball 2"){kind=icon}
 "Santa Rockstar 5"){kind=icon}
 "Bubble Tanks Tower Defense 2"){kind=icon}
 "Rocket Santa 2"){kind=icon}
 "Deep Sea Hunter"){kind=icon}
 "The Unexpected Bug"){kind=icon}
 "Evilgeddon Spooky Max"){kind=icon}
 "Engage"){kind=icon}