Hey, I made a list of cheats for the PC version of Croc 2. Maybe it's useful for practice:

• Cheat Menu: Hold A, press T, Left, Left, Right, Space, Up, Up, Left, C
  • When enabled, pressing Page Up and Page Down simultaneously shows a cheat menu where you can teleport to a village or modify the inventory.
• Position Bar: Hold S, press Space, Down, C, Up
  • When enabled, F7 toggles a bar at the top of the screen containing build date, level filename and position.
• Infinite Lives: Hold A, press C, Down, Left, Up, Right, T, Down
  • Number of hearts never decreases.
• Extra Heartpots: Hold S, press Left, Left, Down, C, Space, Space
  • Does not seem to work. (Even though DebugView prints "Extra Heartpots Activated")
• Add 100 Crystals: Hold A, press Space, Space, C, Down, Left, Right, Left, Right
  • When enabled, Page Down + Space adds 100 crystals.
• Music Select: Hold S, press Left, C, Up, Down, Space, C, Return
  • Adds a new entry to the "Sound Options" menu in the pause menu that lets you choose the background music by pressing A or S.
• Credits Cheat: Hold A, press C, Right, C, C, Down, Left, Up, Right, T
  • Shows the game credits.

There is another cheat called "Magazine Cheat", however, it cannot be activated unless you use Cheat Engine or a debugger and I don't know what it does.

Cheats can only be toggled in main menu. You can verify that a cheat has been toggled by running DebugView while entering a cheat: https://technet.microsoft.com/en-us/sysinternals/debugview.aspx