It is actually not a bad game once you figure out a couple of things.
First, I would recommend to the designers to get rid of the pizza icon that is replacing the standard arrow. I thought the tip of the pizza is how click on things, but you actually need to hover the middle of the pizza to click something.
Next, as most people have said the controls of the bike is awful, but only at first. My recommendation to players to is grind a little on the first level and then buy upgrades to make your bike move up and down faster in addition to buying upgrades to your machine gun and a shield (the upgrades can be bought by clicking on the gun on the bottom left of the screen where it says, "Hornblase tech").
I also recommend to players to use the mouse to drag the bike up and down (keeping in mind the bike will move slower then where you are dragging it to until you have several upgrades to the movement of the bike) since dragging the bike will have the machine gun go off on autofire.
After that, beat the companions by clicking bag next to the gun. Beating the companions isn't that hard after a minor upgrade to you gun, movement, and a shield. By the fourth level you are going to want to use all three by clicking on each one where it says inactive/active next to their names (once you have beaten each one).
Final suggestion to the game designers, actually have a tutorial that explains where everything is located, how the game is played.
Hope this helps!