Avoid the red asteroids with your Radical ship.

Press the D-Pad to move around,
Press A to slow time down,
Press R to summon the Vortex shop to buy upgrades, use the stylus to touch the buttons on the shop menu. (right now the shop is empty as it’s an early version)
And press L to restart the game once you lose.

Thanks to http://www.dev-fr.org for the news.