From the inlay (Soft Aid compilation):
Place the bags of gold in your wheelbarrow before the time runs out. Each bag increases your time and score, but beware, the outlaws are after you - and the gold.
You can escape by jumping on the trucks (by hanging on the hooks) or via the ladders and lifts, but watch out for the deadly, deep mine-shafts. The outlaws can be stunned by dropping the bags of gold on them.
Gilligan's Gold is a clone of the 1982 Valadon Automation arcade game Bagman.