Play as Imotep(the mummy) and when you are in any level try to look for things that are dead or in coffin's or somthing
for example when you are in the frist level when you finally find the caopic jar that has the spell(resurrection) go to one of the mummys in the glass container and shatter the glass. Then face the mummy and use your resurrection spell and it will come alive and help you. Sometimes you even get a whole army of them if you do it right. It's pretty cool.