Oh baby this sounds pretty sweet. I'm a huge fan of Metroid, and I really do love the Alien film series, and knowing that Metroid was inspired by the series, I've always felt that it could use a bit more of that in the games.
Well it seems that the opposite is going to happen, as someone on the development team of this game must be aware of Metroid's inspiration as it is an Aliens game that will be taking inspiration from Metroid!
The game is a sidescrolling shooter with plenty of large open maps for exploration. Plenty of areas will need special tools found later in the game to further traverse through them, being blocked off until you can find them, to encourage backtracking, some of which just simply being elevators that need a keycard, or using your newly found flamethrower to burn through a gooey blockage.
Now if this description is accurate of true Metroidvania design, then ohhh
Not only that but the game seems to portray the Xenomorphs accurately as whenever they kill a marine (which there are 4 initially, with a unique personality for each, and up to 19 can be found), they will drag them back to be impregnated with a chestburster, giving you only a few minutes to rescue them. When one marine falls, another takes his/her place, and you will only be able to have 4 at a time in your squad, and if that marine dies, they die for good.
Aliens won't just be simple cannon fodder though as they will skitter across ceilings, come out from under the floors, and will chase you to your doom if you try to run away. Pulse rifles, grenades and other unique weapons and tools can be unlocked to take out these ugly motherf***ers. There will be Power Loader combat, sections of firing from a speeding vehicle, and fights with Alien Queens in addition to the standard combat and exploration.
It's all sounding very good, and will hopefully scratch the itch of anyone looking for a good Metroidvania sidescroller, or anyone looking to get one last breath from their DS system this holiday. Just don't be too loud as unlike in space, your neighbours will hear you scream.
Aliens Infestation is being developed for the Nintendo DS by WayForward Technologies, and is being released by Sega and Gearbox Software on September 30th in Europe, and October 11th in North America.