Name that Game

We are going back in time, again, to a time when games were fun and new. I love this game. I played all night last night. It's like contra from a different perspective. There's a twist, though. You need to get keys to open boxes that are scattered about the battle feild to upgrade your weapon. When you get all six parts to your weapon it becomes massively destructive.

But, what is this super title? And, what is the developer and the year it was made?I believe it was popular in it's day. Will this one prove to be too easy?