The Nut Cracker is a mission in LEGO City Undercover: The Chase Begins.
Walkthrough[]
Fight the enemies. Defeating them will grant you the new ability to use Dynamite. There is a pile of extra strong boulders blocking the entrance to the mine. Now with the ability to use dynamite, you can blow up the boulders and enter to face Carl Walnuts, Aliens suit and all.
Chase will get a suit of his own to fight with Carl. In this suit, the controls are a little bit different. Press Y to fight with Carl and bang into his mech. Carl will automatically defeat Chase. When this happens, he will retreat to the back of the cave to avoid the falling rocks.
Avoid the rocks yourself and start placing bundles of dynamite by the four support beams. Keep doing this to destroy the mech.[1]