if you are trying for "reached lvl 50 at age 10", make sure you rebirth right after you hit a level, as the counter to next age does not reset when you press rebirth!
dear dev: if you set the game type to "multiplayer", then there would be a chat room made for this game (might be helpful for ppl to get answers to questions, etc) thats what the dev of "anti idle" did.
if you don't want save problems, right click and select settings... then "local storage" then drag the slider to "unlimited" . The save files are going into assets.kongregate.com instead of chat.kongregate.com, where most games put them.
Note: if you kill an enemy when it is entering from the top of the screen, its coins often get knocked off of the top of the screen, thus preventing you from picking them up.