Is there some kind of leaderboard for Arcade Mode? That mode feels uncomplete without it

Flawless Victory Complete 9 Levels With A Perfect Victory isn't giving the Steam Achievement for me. It's unlocking in the game, but not on Steam. Anyone else having this bug?

I couldn't figure out how to exit Arcade Mode. I was using an Xbox 360 controller. I finally figured out to press Backspace on the keyboard to back out. So if anyone else is wondering, that works on my PC. Is there a way to back out on the controller? Great game BTW ...

The hard mode became really hard at level 15, so hard that level 16 and 17 felt like nothing :P But why ennemies weren't exploding in bullets in level 18, against the boss? It made it as easy as it was in normal mode, I was slightly disappointed.

I find the: P2 PRESS GAMEPAD START OR PRESS KEYBOARD ENTER text shown here: http://v1.steam.hlxgame.cc/sharedfiles/filedetails/?id=730354066 to be incredibly distracting when playing single player arcade mode. It's constantly blinking and takes up the top 1/4 of the right side and 1/3 of the top right corner. I'd really like to play this mode some more, but right now the blinking is just driving me nuts! heheh Can you remove this text or only make it flash for a few seconds at the beginning of pla...