So far, Gavin has been working hard on programming the ability to generate rooms, tying the animations in, and developing an easy way for the designers to modify alien and item spawn times/points, as well as various other statistics. The ability for the character to climb up stairs, an appropriate camera, and the cursor are in perfect working order.
So far, the designers are working hard on storyboarding, enemy statistics, and which enemies will be in each wave.
Marcus has created a wide range of concept sketches for the aliens and the interface (a small sample of which can be seen below). He's currently working on animations for the characters.