You can get unlimited slow mo by having five regenerate power pets. You just have to keep clicking the mouse rapidly. Also you can regain your special through pausing in between clicks and phasing into real time for a second, the bar skips as though the time spent in slow mo had gone by in real time. I stayed in slow mo untill i got 120,000 points in endless without getting hit once, spamming special every 5 seconds or so.
 "Super Villainy"){kind=icon}
 "Z-Rox"){kind=icon}
 "Journey To The Chaos: SanZang Run!"){kind=icon}
 "Particles"){kind=icon}
 "Ragdoll Avalanche 2"){kind=icon}
 "Draw-Play 2"){kind=icon}
 "Synapsis"){kind=icon}
 "5 Differences"){kind=icon}
 "You Have To Burn The Rope"){kind=icon}
 "Clear Vision 2"){kind=icon}
 "Dog Eat Dog"){kind=icon}
 "The Last Canopy"){kind=icon}
 "Brute Wars"){kind=icon}
 "Jumpcat"){kind=icon}
 "Warbears"){kind=icon}
 "rotaZion"){kind=icon}
 "Excit"){kind=icon}
 "Amorphous+"){kind=icon}
 "Bubble Tanks 2"){kind=icon}