Golden Force

You unlock these extra combo attacks with Shells collected on each stage. There is a total of 20 Shells to collect and 2 x power ups to be bought for the achievement. Before you buy the upgrades make sure you have all collectibles as once you buy the power ups the shop no longer works due to a bug in the game.

You can buy the first power up but do not purchase the 2nd one until you have all collectibles. Then enter the shop once and buy all Combo attacks as well as Health upgrades. The Achievement will pop while you in the shop. Once you exit the shop you will not be able to enter it again.

Here are Video guides for all collectibles in the game.

The collectibles are Hidden Medals and Shells. Each stage has 3 Hidden Medals and 1 Shell. You use these collectibles to buy Health power ups and extra Combo hits in the shop ( This is also for 2 other Achievements in the game). You unlock B stages by getting all collectibles in the other stages.
Eg - If you want to unlock stage 1-B you must have all collectibles in 1-1,1-2,1-3 and 1-4 , then stage 1-B becomes available.

Wolrd 1


Wolrd 2


Wolrd 3


Wolrd 4