intel hd 4600 and titanfall

If you had a desktop and could add a proper GPU, then the game would run.  It isn't supposed to do anything worthwhile with the very poor quality video from Intel. 

Laptops, Notebooks, and Tablets all omit any option to upgrade graphics.

what would your recommendations be. do you think i could change the gpu without having to change the power supply or would that be unwise?

I would practically have to hold your current power supply in my hand to make a judgment about its quality.

Some of the AMD / ATI mid-level startup new gamer GPUs have been a good comprise between performance and current demands from a PSU, but you can practically only find that class of card as OEM parts, from the likes of Dell, HP, and your PC's source company, at inflated prices.  Last offered by AMD as the HD 6670, sold after that without actual physical change as the HD 7670, and more recently as the HD 8670, that is a serviceable unit, although overpriced now. 

Newegg still has some of these $80.00 parts for sale:  http://www.newegg.com/Product/Product.aspx?Item=N82E16814121645

You have to be in Canada, China, or The USA to shop there. 

Intel published updated drivers which contained the fix for the Titanfall visual corruption some time back:

32 bit drivers published here and 64 bit drivers here