Yes, the entire point of the game is to use gravity, or lack there of, as a challenge. I think the name "Inversion" might be a clue.
"Inversion takes aim at first-person shooter conventions by taking aim at gravity itself. Battle through environments where gravity is as unpredictable as your enemy. Explore a city where the buildings - and gravitational pull - have been ravaged by an alien invasion in a third-person co-op (local or online) quest to find your missing daughter. Use weapons that have the power to disrupt gravity, sending enemies floating into weightlessness or causing objects - even really big ones - to plummet to the ground. Blast through enemy cover in fully-destructible environments where whatever is up one moment might not be up the next, assuming there's anything to hold you down at all."