Zombie gorilla

The only way I found to beat a stage with Zombie gorillas is to wear flak jacket for extra life and use S bullets. They can jump on you from out of screen so flak jacket is the only way to survive that?
i tested a little in arcade. you can avoid if you time it just right whit a fast dodge. just before it lands. but that all i can see.
After playing some more the safest way to stay out of gorilla jump range is to stay in the middle of the map and move up and down in case the gorilla jump on you from out of screen. You’ll hear the gorilla growl before it jumps too.

Having more life helps too of course. Leveling survivor to level 3 gives you extra life. No need to use flak jackets!