How to Defeat Demon Lord in Digimon Data Squad

Pick the digimon Rosemon in your team as it can heal other digimon and bring them back to life. This is the digimon that evolves Lalamon.

Select Gallantmon because it is a virus buster digimon and the last Demon Lord is a nightmare soldier. These two digimon families are opposite so any attacks by Gallantmon will dish out 50 percent more damage than they normally would.

Select any digimon you like for the third member of your team as this is not important.

Use "Invisible" with the third digimon on the two other members of the team, Gallantmon and Rosemon. The third digimon is the only one still visible. All of the Demon Lord's attacks will be focused on the third digimon, leaving the more important digimon free to win the fight.

Use "M. Res." with Rosemon if the third digimon is killed. The digimon is resurrected and returns to optimum health. Rosemon can also revive Gallantmon if killed but Gallantmon will only be attacked once the visible digimon is dead and if the Demon Lord still has remaining attacks.

Perform a "Guard Command" with the third digimon so that Gallantmon's attacks become more powerful.

Use the "All or Nothing" when Gallantmon's attack power is at its highest possible level. This makes all of Gallantmon's attacks either miss or cause critical damage.

Make every one of Gallantmon's attacks hit the Demon Lord by using "Perfect Hit" with the third digimon. Use a "Double Attack" on Gallantmon and all of its attacks are now hugely powerful and will never miss.

Attack the Demon Lord with one of Gallantmon's powerful attacks to beat the Demon Lord with only one hit.