3 Metal Doges spawn after 23.33 seconds700f, delay 5~10 seconds150f~300f.
5 Metal Doges spawn after 60 seconds1,800f, delay 6.67~16.67 seconds200f~500f.
10 Metal Doges spawn after 116.67 seconds3,500f, delay 30~33.33 seconds900f~1,000f.
10 Metal Doges spawn after 120 seconds3,600f, delay 30~33.33 seconds900f~1,000f.
Strategy[]
An incredibly efficient way to beat this level is to spam Catasauruses and Showoff Cats; the large amount of Showoff Cats should constantly freeze Metal Cyclone while the Catasauruses keep doing Critical Hits and finish off Metal Cyclone. Make sure to use the other slots for the second stage. If you don't have Catasaurus, you can replace it with Hurricat and optionally one other Critter. Below is an example lineup:
Nuts 'n' Bolts' Japanese name, Kiki Kaikai (機々械々), is a pun on the idiom "Kiki Kaikai" (奇々怪々), meaning "extremely bizarre". The joke is that the kanji used for the stage name share the same pronunciations as those in the idiom but have entirely different meanings; in English, it would mean something like "extremely machined" or "extremely mechanical".
In YuruGeGe, this pun was reused for the description of Dorotaborg Dk-2 (Dorotabō's Serious/Metal variant), which combined the two aforementioned spellings of "Kiki Kaikai" into one: 奇機怪械.