Personally I preferred the older version simply because I liked the idea of nodes. Also I found it more challenging. Really enjoyed this one too though
Extra stats for making weapons would be good: Speed (how fast the missile travels have it naturally in the middle amd cost less for slower more for faster), size (How large the missile is) et
This game does save your achievments but not your game. On the main menu there is a achievments button. Even if you refresh all the achievments you have got will be there.
 "Creeper World 2: Academy"){kind=icon}
 "Cardboard Box Assembler"){kind=icon}
 "Secret Mission"){kind=icon}
 "No Time To Explain"){kind=icon}
 "NES Music Quiz"){kind=icon}
 "Two Rooms"){kind=icon}
 "Siegius"){kind=icon}
 "Simple Tower Defence! 2"){kind=icon}
 "Coaster Cars: Jack track"){kind=icon}
 "GunDown 2"){kind=icon}
 "I Am An Insane Rogue AI"){kind=icon}
 "Shoot Pixels"){kind=icon}
 "Truck Toss"){kind=icon}
 "Sleep Harder"){kind=icon}
 "Feed the King"){kind=icon}
 "Achievement Unlocked 2"){kind=icon}
 "Body Ladder"){kind=icon}
 "You are a..."){kind=icon}
 "Music Catch"){kind=icon}
 "Epileptic Headsmashing Game 2000+ Deluxe!"){kind=icon}