I like shooters and for few bucks I found the cased edition of Deadfall Adventures. It's a FPS with some great puzzles along the way. Basically, you have to stop the Nazis and the Commies to get the Heart of Atlantis and, in order to do that, you have to travel with your companion in the Arctic or the luxurious jungle. There's also a constant fight against the monsters that emerged. The flashlight is quite useful now.
You can use double weapons, but sadly you can carry only two types in the same time.
At times puzzles may seem difficult, but in the end you can solve them because the NPC gives you clues.
The graphics is superb. It's a short game.