More Money:
When you beat a boss you get a lot of money, so before going after it and all the money disappears. Slam on pause and then go around getting it.

Double Item's:
Get as many item's as you want and use Record and then shoot all the item's you wan't to and when your Record is done you can pick up all the item's you shot in Record with out shooting any of the item's off Record.

Hidden Cat Medals lvl 1-1:
1.Pick blue crystals and pause. Run for the medal.
2.When statue collapses jump on top of it's head, then rewind.
3.Buy a TS-1600 for 4000g. Go up to the 16ton thingy then suck it up. Ahead of you will be a medal.

2 Boss Strategy:
World 1 Boss: Pauses are helpful here. get 5 barrels and shoot at him. Repeat till dead.
World 2 Boss: Pause then shoot him in the tail. Repeat till Dead.