http://www.kongregate.com/games/fortunacus/emoticon-defense

It's on the high scores for this week, so it might be worth a look. It's a fun game anyway.

Hack (for the moment)= _root variables:

_level0/:cash
_level0/:health

These also look interesting:

_level0/:maxhealth
_level0/:bullet_speed

Edit: cash didn't work for me...only health...find it and lock it (broken image removed)