In Penguin Mutiny level, there are mainly three things to avoid:
1) Avoid Big Louie, the big guy with the tool
2) Don't go into the box to stay away from the sailors, just go into the room and take all of them out. Don't use the tranquilizer, because they will come right back again. If you use the tranquilizer before taking them out, the sailors will multiply in number! Oh, no! Then, when all the sailors are knocked out, get the key and open the hunter's door BEFORE going onto the room with the hunter. Go back and get into the box now, and go into the hunter's room. Get that key, then get out the way you came in. It's safer. If you want to, you can even go right in front of the hunter when in the box! That coward, he doesn't even look down! HAHA!
3) After you make the toilets leak, don't go into the toilet room again. Big Louie is standing RIGHT THERE! In front of the door! He'll get you.
Now I have some hidden coin facts! ( Still in Penguin Mutiny)
1) Before going into the final stage, either before or after getting on the ladder, I forget which, go around the ship and you'll find coins!
2) Look in the lockers! You'll either find coins or life tikis. Also, only do the lockers that are light colored green, and only the ones that are cracked open a bit.
There you go! Enjoy not getting caught, and getting coins or tikis!