The phrase "breakable weapons" means that the weapons can easily be damaged or broken.
Sentences with «breakable weapons»
Zelda BotW with breakable weapons = 0Absolute trash. (n4g.com)
Zelda BotW without breakable weapons = Best Zelda of all time / One of the beat games of all time. (n4g.com)
The combat slightly improved each time between the first game and The Room, but then Origins came along and decided to incorporate breakable weapons (ugh) and quicktime events. (polygon.com)