I've got the combat basics roughed out for my Pikmin style action RPG prototype. It runs terribly for me in Firefox so you'll find a link to the EXE as well, in case you don't use Chrome.
WASD to move
E to pick up or drop Scepters (They all fire the same unfinished projectile)
LMB to use Scepter
Hold RMB to direct Imps
Middle click to make Imps hold position
Direct Imps toward slimes to make them attack
 will reset the layout
I'm getting 58 - 60 fps with the EXE, so hopefully it won't chug for anyone. I minimized my use of pathfinding as much as possible but the Imp's AI is still pretty taxing. Anyway, feedback would be greatly appreciated.