Famicom Wars DS

Once you beat Normal Campaign once, you can use three of the 'Star' Forces with any character Rank 1 or higher. The three forces are Eagle Eye (+2 vison), Gear Head (+2 base repair), and Conquerer (+2 Capture).

Brutal Combat is the third level of the Combat Mode. It is harder then Hard Combat and every map is Fog of War.

Beat the basic course for money, turn, or time survival mode to unlock the champion course. Purchase from Hachi for 1000 points each.

When you complete campaign, you will get the wallpapers for the three COs that you used most that campaign. You can then select those wallpapers from the Display menu.

You must beat hard campaign then head to the CO Select Screen for your reward

Complete Combat Mode at least once for this.

By having old versions of advance wars inserted in your DS at the same time as Duel Strike, unlock new buyables at the the Battle Maps Shop!

Once you beat Crystal Calamity (the one with the big black crystal), you can purchase Oozium from Battle Maps for 1000 credits. You can then have predeployed Ooziums in your design maps.

In Map Design mode, hold L and R while selecting the mode to produce a special pre-made map, with "Advance Wars" spelled out in the terrain.