Madpet Massacre

A side-scrolling shooter with an arsenal to manage. Movement and jumping sit on the arrows or WASD, the mouse aims and fires, and eight weapons are reachable by number key, by S, by down, or by the mouse wheel — four different ways to switch, which tells you how often Madpet expects you to do it. Enemies vary enough that the right weapon matters more than accuracy, and switching under pressure is the actual skill.