Azuki beans under attack

It is like war out here. Lacey leaves might be fashionable but they are a sign of insects feasting upon my precious azuki bean plants. Bean plants can sustain a significant amount of insect damage and still produce beans, so I'll shake them off and see if we can survive without spraying anything. Something crawled around and killed entire plants here and there so my rows are not full -perhaps root damage from moles? or some ravenous insect? I sometimes feel I should stand out here in my samurai gear and wage war - my beans will prevail, I declare!