So, you want to use the 64-bit flash plugin from Adobe. But you also want to use Adobe acrobat which is only 32bit. All you have to do is install the nspluginwrapper and remove the 32bit flash-player and finally install acroread and the 64bit flash-player. Most importantly nspluginwrapper can't use the flash plugin.

Code:
# add acrobat remove 32bit flash
sudo zypper in acroread nspluginwrapper kdebase4-nsplugin -flash-player -pullin-flash-player
# remove support for nspluginwrapper 32bit flash
sudo /usr/lib/nspluginwrapper/x86_64/linux/npconfig -r /usr/lib64/browser-plugins/npwrapper.libflashplayer.so
# get the flash player 10 for 64bit
wget http://download.macromedia.com/pub/labs/flashplayer10/libflashplayer-10.0.32.18.linux-x86_64.so.tar.gz
mkdir ~/.mozilla/plugins
# untar the plugin to your user home
tar zxf libflashplayer-*.linux-x86_64.so.tar.gz -C ~/.mozilla/plugins/