Undead End Hardcore

Undead End is a retro-homage to the beautiful arcade games of the first '90. I tried to recreate the atmosphere of that period using only pixel art and low-fi sfx. Most of you will find a lot of quotes from other games, hope you will appreciate.
This is the 'hardcore edition': more graphics, sounds, weapons, enemies and more. And an awesome soundtrack of 3 different (GREAT) artists! Thank you guys!
(update) I added the option to switch from the ZXA keyset to the ASD, and corrected a glitch. Hope you'll find everything more comfortable. Thanks!