I originally posted a comment, in which I gave this game a 3/5, but I have now downgraded it to a 1/5...I've encountered at least 50 glitches with this game.
I think this game is many times better than the Doodle God series. It is organized in a more professional way, and it shows you when you are done with a certain ingredient. Great game! 5/5 stars.
You should be able to equip your survivors with weapons, and have levels with a HUGE amount of zombies in which you have to run over/gun down with your survivors. Great game, nonetheless. 5/5 stars!
Here is my guide for the Platinum Chain Trophy: Get all of the Bronze and Silver trophies. When you do this, you will get a 5 skill point boost when you start a new game. Use this to add to fire spread and rapid fire. Move as little as possible. When you level up, continue to add your points to fire spread and rapid fire. When the purple grunts start to come, attack them as soon as they enter the screen. Try not to attack the green bosses, as they'll waste your time and likely kill you in the long run. Also, try to kill any green monsters if you see that they are in the same line as you, and will hit you if they continue un-killed. If you don't see any purple grunts or green monsters in your line in sight, attack any monsters around you. Try not to panic when you reach the 900 - chain mark. If you follow most of these rules, you should be able to get the trophy. I apologize for the messy and unorganized list, but I hope you learn something from it.
 "Frontier"){kind=icon}
 "Bowja the Ninja 2 (In Bigman's Compound)"){kind=icon}
 "Dragon Age: Journeys"){kind=icon}
 "Warp Game"){kind=icon}
 "High Speed Chase 2"){kind=icon}
 "Last Egg Alive"){kind=icon}
 "Bunny Invasion: Easter Special"){kind=icon}
 "Bango!"){kind=icon}
 "Alxemy"){kind=icon}
 "Air Transporter"){kind=icon}
 "Sniper Assassin: Final"){kind=icon}
 "Sniper Assassin 3"){kind=icon}
 "Craqua"){kind=icon}
 "Zombus"){kind=icon}
 "Stunt Crazy"){kind=icon}
 "Pixel Purge"){kind=icon}
 "Insectonator: Zombie mode"){kind=icon}
 "Dragon Age Legends: Remix 01"){kind=icon}
 "Nano War"){kind=icon}