For the original arcade upgrade, characters and costumes are usually unlocked by completing the game's or Survival Mode with different characters. If you'd like, let me know:

Right-click the .zip and extract it to a folder. You will usually find an .exe file (the trainer) and a .txt file with instructions.

Zip files are a common delivery method for Trojans or ransomware disguised as game tools.

If you must use a trainer, stick to established communities like MrAntiFun or GameCopyWorld, which have long-standing reputations for scanning files.

You can often unlock all characters and costumes using a button code on the menu: PS3/PS4: Hold L1 + R1 + L2 + R2 simultaneously. Xbox: Hold LB + RB + LT + RT . A sound will play to confirm all content is unlocked. Arcade Version (Dead or Alive Plus)

Most trainers will trigger a "False Positive" in Windows Defender because they inject code into other running processes. 🕹️ How to Use Game Trainers