First you need to download
rootsh
FileBox

Using X-terminal type:
This command will remove all your games (Blocks, Mahjong, Chess, Marbles)

This command will remove User Guide languages.
If icon of the User Guide is still in menu then via FileBox go to:
and you should see User Guide.desktop file, just hit delete and that's all.
Well if you don't use Store application, you should probably delete the Store.desktop

Original non-needed packages
sudo apt-get remove
hildon-theme-beta
osso-chess-ui
gnuchess osso-graphics-game-chess
osso-lmarbles osso-graphics-game-lmarbles
osso-sounds-game-chess
maemoblocks
ap-installer amazon-installer foreca-installer facebook-installer skype-installer dtg-installer
tutorial-home-applet
osso-tutorial-l10n-engb
osso-tutorial-l10n-ptpt
osso-tutorial-l10n-frca
osso-tutorial-l10n-nlnl
osso-tutorial-l10n-cscz
osso-tutorial-l10n-itit
osso-tutorial-l10n-eses
osso-tutorial-l10n-svse
osso-tutorial-l10n-frfr
osso-tutorial-l10n-dede
osso-tutorial-l10n-fifi
osso-tutorial-l10n-nono
osso-tutorial-l10n-esmx
osso-tutorial-l10n-enus
osso-tutorial-l10n-ruru
osso-tutorial-l10n-mr0
osso-tutorial-l10n-plpl

Safe to remove you will get free space about ~10Mb