Without analyzing the level in the editor, it's so hard to detect the coins.
Coins
0:42 Hold to avoid tapping the cyan ring.
0:47 1st coin.
1:23 Skip the cyan ring.
1:26 Key (in fact there's no trigger inside)
1:29-1:32 Don't tap the cyan ring and hold the green dash ring.
1:34 2nd coin.
1:55 Hold.
1:58 3rd coin.
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