Multi-page resumes are starting to become more accepted. Personally I wouldn't do it, but that's just me. I've also never seen/heard of 2 columns in a resume. Again, I wouldn't do it, but if you really can't see yourself cutting it down I guess that's okay. But to have a combination of both these things I would say isn't great.
Some other nitpicky things...
Like I said before, I would take the "Gamestop Manager" out of the objective. This should be a resume that you could be giving out to 4 different stores.
Don't list every single one of your job responsibilities in such detail. You don't want them to know everything about what you've done--that's what the interview is for. You want them to ask you questions so you can talk up all your achievements
. They should look at your resume and want to ask a question such as "I see you performed a lot of administrative duties. Can you tell me about what you're interaction with other employees was like on a daily basis?" Stupid shit like that.
Education section should be above work experience. Order should be Obj, Ed, Work Exp, Achievements/Activities.
For your jobs in the past, put your verbs in the past tense. At that job in Beavercreek, you're not "maintaining store appearance to current standards." You "maintained" it, damn it. Yes its nitpicky, but its accurate. I feel that you're nitpicky too, since (unless it was a typo) you said the resume is 2.4 pages long, not 2 and a half.
One thing though...all of my suggestions are on the basis of what I've learned for typical resumes you would send to corporations. If the retail sales industry is different, don't hold me responsible.