I have multiple gamebreaking glitches in my map and i just don't know how to fix them.
The zombies are floating a littlebit above the floar and the movement of the zombies is weard.
Also when i rebuild a barrier the tilt of the screen is not there but by the third rebuild barrier the screen is glitched and it seems that the litte bits of tilt by every rebuidl are stacking up and given to me at once.
how can i fix this all?

already thanks!