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