Here is the full list of all 11 Coin Blitz achievements.
Use a Bulldoze coin.
Blow up 100 bomb coins.
Deposit a coin with a 500x multiplier.
Unlock all Metal coins
Unlock all Gem coins.
Unlock all Radioactive coins.
Unlock the Mithril coin.
Unlock the Adamantite coin.
Unlock the Galaxy coin.
Unlock the God coin.
Upgrade the God coin 100 times.