Happy Wars

This achievement requires you to use the Warrior to get 1,000 kills. A strong sword for this achievement is very helpful, so level up the Nouveau Riche Sword for good attack stats since it has Attack Lvl 2 and Attack Lvl 3 with it. Also, make sure you are comfortable with the Warrior's skills and know how to use them well. Rocketman and Charge Attack will be good skills to master for this achievement.

Thank you AOS Puck for the information!