Strike Force is a side-scrolling run-and-gun in the Contra tradition: you move right, shoot everything, pick up better weapons, and fight a boss at the end of each stage.
The weapon variety — handgun, rocket launcher, shotgun, machine gun, grenades — is what keeps it interesting, since each suits a different enemy density and each boss has a weapon that trivialises it.
Contra, the classic run-and-gun series — same side-scrolling structure, weapon pickups and boss fights.
Handguns, rocket launchers, shotguns, machine guns and grenades, each suited to different situations.
Yes — virtual joystick on the left, jump, shoot and grenade buttons on the right.