'It's possible to 'store' random crits by filling up the crit bucket (range 0-1000) and sending crit requests to get crits on-demand as long as you have it filled. Of course, hackers got around that and they can still increase the number of crits that you get, but recently I have seen some 100% melee crit hackers but that is not confirmed. This hack used to be worse, you could get crits 100% of the time, that was patched. Obviously, they only work at servers that have random crits enabled. This means, that for example, you can get 7 'random' crits in a row. This hack causes the player to shoot incredible amounts of crit shots. 'Triggerbots automatically perform an action and are harder to spot.'-TF2Wiki You can see Trigger Bots used on classes that require precision like a scout, sniper or heavy. There are a lot of different types of Trigger Bots: Auto-Backstab, Auto-Detonate, Auto-Airblast, Auto-Uber or just the original Triggerbot that shoots if there is an enemy under your crosshair. Triggerbots usually complete offensive actions for you. 'Hitscan Silent Aim can be spotted if the player is flicking for 1 tick and 'returns' to the position their cursor was before.'-TF2Wiki Unfortunately, silent aim still works for projectile and melee weapons. Silent aim makes you flick back after the aimbot made you flick on target. Silent aim hides the snapping caused by aimbots locking onto players on the spectators and cheaters POV. This means that you will probably not get lucky when you try to strike it from behind. This aimbot can detect you wherever you are. Aimbot will take control over your aim and flick on the enemies head, with some aimbots with the help of Triggerbots firing. Sources say that for example sometimes it favours closer enemies or snipers above other players. It uses a system that has priorities in killing players. This is basically like a minimap from other games.

The radar shows the location of everyone, their team, where the medkits are etc. This is a (hopefully) complete list of all of them.

There are many different types of hacks, and each of them does something different.

How to hack tf2 items