I think the low resolution RenderTexture is a really smart way of approaching the pseudo 3D environment of Deathchase, and it leads to some awesome looking "sprites" like the bikers from different relative perspectives. As for the movement of the player, it's a bit off in some key ways. you don't seem to rotate as dramatically as the original Deathchase, and one key difference I noticed is that your projectile doesn't seem to change course mid shot while you turn. Really cool stuff.