The ornamental design for a handcontroller, as shown and described.
FIG. 1 is a top perspective front view of a hand controller of the present invention.
FIG. 2 is a bottom perspective front view of a hand controller of the present invention.
FIG. 3 is front view of a hand controller of the present invention.
FIG. 4 is a rear view of a hand controller of the present invention.
FIG. 5 is a first side view of a hand controller of the present invention.
FIG. 6 is a second side view of a hand controller of the present invention.
FIG. 7 is a top end view of a hand controller of the present invention; and,
FIG. 8 is a bottom end view of a hand controller of the present invention.
Any elements illustrated in broken lines form no part of the claimed invention of this application, and are included to show environmental structure associated with the claimed invention.