Even from a trusted source, upload the trainer .exe to VirusTotal (a free online malware scanner). Expect a few "false positives"—trainers modify memory, which many antivirus programs flag as "hacktool." As long as it’s 1-3 detections from obscure AVs, it’s usually safe. If 20+ engines flag it, delete immediately.
: Prevents the "Game Over" screen by freezing the life counter.
: Automates firing at high speeds to reduce finger fatigue during long waves. Wave Skipping
. While the game has built-in cheat codes, external trainers and tools like Cheat Engine
Most trainers only work in Single Player mode; using them in multiplayer may cause crashes or bans.
Injecting memory can cause crashes, corrupted save files, or visual glitches. For example, using "Infinite Special Weapons" while the game is saving your loadout can corrupt the save.dat file, forcing a full reinstall.