Use I for ice, F for fire, C for corruption (you have to wait for 15 seconds before using corruption spell) Q for fire ult and Space for Ice ult. Not very good. Going to try and make improvements.
I fixed the corruption glitch. You now can win. The first giga is immune to corruption and ice. (only the clones are weak willed enough to be corrupted). WARNING: Corrupted giga may give people nightmares