We Are Legend Hacked

TIPS:
Like Guitar Hero, you can hold down the buttons as long as you want- they won't fire till you hit the spacebar. Use this to your advantage and get ready for the zombies as they approach.
Give training wheels mode a spin if you find Standard mode difficult (and use the cheats, if you really need to).
Build your righteous bar up by killing zombies.
PRESS THE ALT KEY IF YOU'RE IN TROUBLE! You'll roast all the zombies, have unlimited fuel, and get some breathing room.
Finally, be sure to visit the shops to buy some new gear. It's real hard to beat the game without a zombie killin' hyena.

If it seems too difficult, you need to play around with the Training Wheels mode first. After you get the hang of it, Standard mode is a really well-balanced challenge.

If you don't like the keys, you can change them. Go to the settings screen and change away.
And if you think the introduction lags,press the "skip to game" button- that's what it's there for, baby.

SOME PLAYERS ARE HAVING TROUBLE WITH "RIGHTEOUSNESS"- If you're pressing 'ALT' and the game is getting messed up (like the music stops, but the xombies keep coming forever or some shit like that), you need to change the keys in the options/settings menu. Change ALT to ENTER, and you should be set.

And finally: this game was made for the Newgrounds/ArmorGames Rock Out competition. So there was a very tight deadline with no guarantee of compensation. It doesn't have many songs, the control scheme is a bit awkward, and it could have used some QA time. But it was made in under two months while I was working a day job, so bear that in mind if you find yourself hating it.

TL;DR -
Hold Q,W,E,R,T,Y to set your zombie traps, press the spacebar to fire them. Press ALT to unleash your righteous guitar-playing skills (once you've charged them up). Press TAB to convert session combo points to Righteousness.