Have I got a treat for you. Perhaps old news to some, Front Line
is a side-scrolling game that plays a lot like Abuse
Aiming and shooting are done using the mouse. The keyboard primarily functions as a means of movement. Basically it's just two keys, Z for left and C for right.
Controls take a while to get used to, but once you're past that hurdle it's all fun.
Name: Front Line
Developer: D. Ikushima