It's a pretty great moment when you get the bike. I wouldn't say the game was PAINFULLY slow, just slow when compared to the bike. :P
Nice work on the shading and line art. The lines are smooth and the shading doesn't overlap onto other areas. The only thing I could suggest would be to add a few details to the outsole of the shoe on the right. Just a few of the grip lines that can be seen on shoes, but then again it might've been a stylistic choice; in which case never mind.
Good work overall!