This is a great sequel to the first game!
Let me point out all the strong points that I personally think made it great:
-The change of features and extra mechanics make it more smooth and refined.
-I love the fact that you brought back the guitar as an unlockable weapon.
-Bonus vultures and barely fading weapons and kits make it more the fun and balanced.
-Its also good that there's a second character (a tonfa was a great choice).
-The fact that the map focuses on where I aim adds more challenge and a logical sense of perception.
If a third game is coming, please note this also:
-The option to choose between various music (maybe through purchase) would be a great add-on. -I grew to like the main character since the first game. If your making a third one, then try to add a new character and a story.
-I would love to get to know the tequila-drinking, zombie-slaying guy more. I f you could add funny captions that randomly pop out of the character during levels, it would help for me to know what he's thinking as he does what he does best.
Overall its a really fine and well balanced game! Good job and thanks for continuing it.
A 5 star without a doubt :D