Name This Game

You have discovered a long-sought-after buried treasure, and just when you thought you have discovered a long-sought-after troubles were over, things get really tough! There's a persistent shark who thinks that the treasure belongs to him, and he is after you! As if that were not enough to contend with, there's a big old octopus sitting right above your trove who keeps reaching down to check things out. There you are, shooting at the shark, fighting off the octopus tentacles