windwind123, there is "gfx" icon in the bottom right.
It disables units rendering )
This game is for people who start round and go to drink tea )
BTW, I have no idea how to beat 500 rounds on Insane mode.
Should I play a year and all money spend to HP?
I learned how to pass on easy (green map) NLL.
The hardest level is 29 (many fast armored mobs), I use non-upgraded poison and fire to damage them. Bosses are vulnerable to poison. And air mobs are vulnerable to sonnic.
So, my set is: 1 cannon, few electrics, few lasers, poison, fire, slow, sonnics.
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