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