- Triple cargo hold 
Search underwater to the left of the base on the Medieval level to find a 3x 
Cargo Hold.

- Church bonus 
Crash into the church on the Medieval level at high speed to find a power-up.

Cheat Codes -
While playing a game, hold [Left Shift] and type one of the following codes to 
activate the corresponding cheat function:

Result - Cheat Code
All weapons - hhroqtat 
Level skip - terhsrer 
Repair damage - cchaserq 
Cargo - htarsrec
Complete current level - herhsore 
Complete all levels - qheroest 
Enable all cheats - cheatseq