Usability / Functionality; Basic UI on menu which makes it easy to use, never had any fps drops or crashes with the injection or having it run during gameplay.
Features; Aimbot is good especially with sniper class just sit back and destroy heads :D. Trigger bot could use some work especially with soldier you will be shooting rockets all over the place with no control lol. You can easily disable this feature though. ESP has tons of costumization so if you find you have to much clutter on the screen you can disable and enable the settings to your liking.
Security; Nothing really to worry about VAC anti cheat sucks and the cheat has never been detected, with that said there is always a possibilty to get banned.
Conclusion; Never would of tried playing TF2 without cheats because gameplay looked boring and its an old ass game but the cheats make the game much more fun.