this is halo combat evolved game 
its an iso file so you need to open it with a program called power iso 
here is the link to this program
  
https://poweriso.en.softonic.com/

after you downloaded halo ce open it with power iso 
the link i gave you its for the trial so a popup window will appear just click on continue unregistered and you will see a bunch of files create a new folder like halo ce and click on the bar that says extract extract it on the folder 
after you extracted open the folder and click on the setup.exe install the game and when it asks for the cd key type in any of this two 

KMCT7-2QKVF-4KV27-6P83J-THCBJ
G9QK2-22KV6-TFXCR-V3Y9M-2CCBJ

and then wait for the install to finish 

after you installed the game just open it and it should work
and there you have it halo ce full the update should be located in the crack folder 
if you have any problems post a comment i will try to help you