Break Machine is an enemy in Crisis Core -Final Fantasy VII- that appears in the Shinra Machines Unit of the Special Operations Arms Laboratory.
Accessories that guard against Instant Death help. Break Machine is immune to Gravity. Costly Punch inflicts significant damage as does high-level magic, such as Flare or Quake. Another useful strategy is to Doublecast Energy; this deals a large amount of damage while avoiding its Instant Death attack.