So, one of the species in a fantasy world I'm working on is a lemur like species that stands around 3-4 feet tall, or about the size and weight of baboons. They have very strong legs with opposable digits on the foot. (mostly just the ability to grasp, but not with much finesse), and short, claw-like nails. The legs are quite good for jumping, with kangaroo like power to them.
They have short and lanky arms, which are not nearly as strong as the legs. This is not my own depiction, but a creature of similar proportions from a video game to give you an idea of the body shape of these creatures.
They are intelligent, and capable of primitive iron and metal working. They sometimes live in trees or in burrows for protection against larger animals. Other times, they make stick and mud huts. Recently they have come into conflict with humans who wear armor such as gambesons and chainmaille. So they have a need for powerful projectile weapons to pierce their defenses from a distance.
I was thinking, that given that their legs are much, much stronger than their arms, if they might use foot launched javelins or atlatls or some other type of weapon. Any ideas of how this might work or be made feasible is welcome.
Also feel free to post a response if you have other good ideas for tactics or weapons they could use that would play to their strengths!