Assault is a game mode featuring a Flag for each players to protect from enemy destroying while aiming at destroy opponents'. When the flag is destroyed, the corresponding player will be defeated.
Assault mode uses small amount of specified maps from Standard mode.
In addition to protecting the base itself, players on all sides need to focus on protecting the Flags placed within their base. Be aware that the Flag itself is very fragile and will be destroyed immediately if attacked. Build as many defenses as possible around the Flag is a good choice.