Traps
Being able to move things from a distance would give the art of trap-making and -springing much more flexibility, because you wouldn't have to figure out how to set it off without endangering yourself in the process. Simply stand at a distance and "PULL THE LEVER, KRONK!"
Step 1: Set up a trap with a trigger. Step 2: Wait until the enemy is over/under it. Step 3: Pull the rope/lever/whatever from afar. Step 4: Voila! The enemy is in a pit, or under your falling rack of spikes, or beneath the pile of boulders you just dumped on them. ...I kinda want to illustrate this now...
Traps are a classic tool of the wimp against the muscleman. They don't require you to overpower your enemy, just be more clever than they are.
I initially posted this as a comment, because it's a fairly simple reply to what may be a more complex question, but there you go...