I almost had 250k in one run and then, out of nowhere, pogo stick hell! They were everywhere! It was one of the scariest experiences I've ever had in a game.
I don't know if this is just a problem for me or not, but just so you know on level 17 the water seems to be ignoring the pipes, even the ones that are static. The game is really nice though, so hopefully if it is just a glitch I'm having it'll fix itself soon!
The speed upgrades are far too useless for having the same cost as damage upgrades. A better upgrade system would definitely help, especially if there was a way to just increase general firing speed rather than the speed of the individual weapons.
The weapon making cost system is so horribly broken. Overall this is a great game, but when the hardest level only gives $160,000 it shouldn't cost millions to make one of a maxed out weapon.
I finally got a little over 100,000, but then when I ended the game I couldn't submit my score to get the badge because I ended it manually. Guess I have to try to get 100,000 all over again. =\
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