I've finally gotten around to putting together a demo for Bugs.   You can download it here.  This is a small portion of the game and it's more of an engine test than a demo.  Please keep in mind that this is an early test so there are many temporary things in there. You can play around with a few of the enemies though so there is stuff to do.  The default resolution is 1024x768.   Click below for controls

Follow up:

CONTROLS
d: move right
a: move left
space: jump
ctrl: roll

mouse: aim
left mouse: shoot
middle mouse: throw grenade
right mouse: melee

Throwing grenades and the melee both take into account your angle to the cursor. If you melee either the fly or exploder with the cursor over your head, theyll get hit straight up.

SPAWN ENEMIES
o: fly
p: exploder