My hidden and dangerous 2 hell

Hidden And Dangerous 2

Hello peeps, havin a total mare on this game. I am on the lighthouse level and am stuck. I cant find all the cannons to blow up. There is a locked door ( to an electrical room i think) which i am guessin i need a key to open it, but i cannot find the key. Killed everyone and done everything else. AAAARRRGGGHHHHHH!!!!!!!!!!!!! can anyone help? Does anyone understand what i just wrote? lol Any help wildly appreciated,

Tommy d

 

If you're stuck, use a walkthrough.

Another one.

 

First link won't refer, second one is OK.

If you want others, just use a search engine with the entry, Hidden and dangerous 2 walkthrough.