ZEQ2-Lite is an open-sourced and mod expandable project based on a highly modified ioQuake3 engine foundation and features many true-to-reference DBZ visuals and mechanics.
An attempt at attacksets for Vegeta(Namek and Frieza Sagas) to show what that there is enough diversity in his attacks to warrant their inclusion, rather than just costume swaps. Aside from textures/sounds/animations, model fixes/edits/replacements would be needed.