I review resumes. Don't include dates for education. I would include jobs that show work history the last 10 years with dates. Definitely write about achievements for each job in direct relationship to the job you are applying for and not just a job description. Objective is worthless. A professional summary of your career is helpful if it's geared towards the job you've applied for. In terms of number of bullet points, I think you can do 3-4, but you need to be consistent with each one to have similar formatting. And also watch the overall length. I recommend no more than 2 pages. The 1 page thing is a myth.

Also, women have a tendency to phrase things as "assisted with" or "helped lead".., remove the assisted and the helped. Just say "I did x" or "I led y." Men do this and it's more effective.