alpinestorm a4

Thanks and have fun, I'll post the change log tomorrow
In the meantime have some screenshots

-Rotational Symmetry
-More health and less ammo on last for defenders
-lowered drop to death pit to reduce confusion
-added separate dev texture for the floor
-removed some windows
-flipped stair direction and added extra sign between last and A
-removed flank to last because it was out of place and op
-other minor changes