Battle speed doesn't effect the rate at wich bleed and decimate dammage your opponents. It can be usefull in harder fight to switch to slow to gain extra dammage.
I managed to go to the last level of the alien campaign.It's just so frustating to see that I could easilly beat it if that last raze soldier didn't spend his time hiding.
AHHH NOOOOOOO my pc was dead so i have buy another one....i was near the last badge..1 more perfect and nao i lose all AHHHHH i gona suicide meh cuz lol nooooooo!