great gameplay, but it has some faults... the main problem is: the game is very short! I want to see my kickass zombies in action!! it needs many more levels, bigger maps, and more enemies. the main idea is awesome, therefore I give 4/5.
after a missed shot you can use the "tab" key to jump to the "continue" and the space to press it, this way you don't have to move your mouse so you can tune your shot pixel after pixel. :)
creative missions (heartbeat, shoot when thunder strikes, shoot electricity then shoot guards in dark house, server room, etc.), great animations, nice graphics overall, easy and precise controls... I gave 5.
mindless shooting... if I'm low on health, I can simply shoot the enemy cannons rather than trying to shoot the tnt-barrels, no penalties or "mission failed"... 2/5
after I've logged in for the first time, I clicked the flashing "Mail" button to read the welcome message. in the same time, the tutorial unstoppably begun, but the mail window has blocked the view, and there was no way to close the mail window, so I had to click through the tutorial, and missed everything... now I don't know, what to do, and I can't watch it again, and I'm pissed off. 1/5
for the last (or any other) offense level: use the m4's recoil so that you can shoot the enemy from below. move your gun to the right side of the screen, so the bullets bouncing off the wall fall in the front of your gun and don't hurt you.
aiming is way too hard and non-realistic (or it is not like what you got used to in other games). it would be nice to have some kind of aiming device... or the arrow should fly towards the mouse pointer, this way you could fine tune your shots. I recommend a 2nd edition, it would be great fun! but this is only 3/5.
agreed with billyyyyyy... and if your stats are good enough, some enemies will miss you regularly. orc berserkers can't hit me even once, for example. :D