Very cool, very short, over-the-top throwback side-scrolling shooter/platformer.
This game reminded me a lot of Duke Nukem: Manhattan Project, which rocked. 2D characters with a 3D environment. Not exactly beautiful but fun and varied, with some interesting. The engine is rock solid. Mechanics are fluid and shooting is very satisfying. The controls at times - I used the 360 Controller for Windows - are maybe slightly unusual but you get used to them fairly quickly. You need to.. as the game is only 2 or 3 hours long.
There's definitely replay value here, but I never continue playing a game passed its main campaign. Too many other games to play. But even when I had finished the main campaign (rather efficiently), I had only achieved few of the many upgrades available - some to your suit, weapons, grenades and actions.
There are two difficulty options. Normal and Hard. I found normal a little on the easy side which I felt like at the time, bar the main boss, but I can imagine needing to switch to hard on a second play through.
Pretty fun, worth $5 or $10.