if you are getting lag press esc twice and it should be better, also play on firefox or oprah,
if you need any help use a rocket launcher with drum mags, it has infinate ammo.
on mouseover can we have a way to see the exact amount and material of certain upgrades (looking at you Minebot >.>) because i have no idea what 1D cost means...
if you're taking ideas for the gem crafting system, make it so you need for the first white 12-6 (the upgrade) of two of the level 4 gems. and make it so you cannot find white gems at all. and that if you find gems of any kind it is usualy the first level rarely the second but never the fourth.
Is anything :P