Another great title, although I still prefer Minivac (everyone should give that a play). The top down controls were tight and felt smooth and responsive. The sprite work is cute and the backgrounds for all of the levels were great. I played in the browser which means that enemies off-screen get cut-out rather quickly which makes it hard to predict their movement direction (seems that movement is random rather than pre-determined paths). Maybe this is better full-screen mode. If their movement is following a path the player would feel less "cheated" because you can plan your movement based on their movement (hope that makes sense). Also I would destroy bullets when they collide with walls, else you have to dodge bullets that are coming from an unseen enemy. Again it makes it feel unfair if you have to react to enemy behavior that is happening off-screen. The death animation needs some more juiciness (but this is just a suggestion and not a gameplay issue per-se. I enjoy your work a lot. Good stuff!!
I appreciate a lot your feedback!
I'm planning on releasing an update someday... as of now, it contains more animations, minor fixes like enemy bullets colliding in walls so you don't need to worry about random bullets coming from nowhere, among other issues.
Hopefully you give it a try once the new version is up, again, thanks for the feedback! =)