Another revision
Drinking this soda restores scout's health to max.
Gives the scout 200% movement speed for 10 seconds.
During this, scout is not able to heal from medikits.
Scout is damaged over time, resulting in 60 total damage.
To activate this, Scout is required to kill 2 enemies at point blank.
The weapon of the method does not matter. Melee can contribute to the count. As long as the finishing attack is from a point blank distance.
Scout automatically runs. When not moving for a great distance per second, the scout dies.
Otherwise it could be made this way, the scout gets damaged for 12 damage per second. Moving a long distance heals the scout, the check is done every second. The max heal rate is 6 hp per second.

Enpage - Sniper's double barrel shotgun secondary
When firing this weapon, the sniper gets 13 seconds debuff that makes his sniper rifle unwieldy. The debuff reduces the damage of sniper rifle by 40% at the last of calculation.
The shotgun itself has twice the spread of stock shotgun, deals 40 damage at max. The fire rate is so high that it almost seems like firing both at the same time. Faster switching time to melee after carrying this weapon.

3 seconds after getting stuck. The soldier is the explosion.

Ass ender or Ascender . Or, Ace ender.
When right clicking, the soldier teleports to the location of the projectile. When the game detects the soldier to be not moving much distance after the teleportation, the soldier is automatically sent to the spawn point instead of killing him. This is to avoid getting stack and there is no way around rather than to kilbind, which is not desirable. There should be easy to trigger this spots which you can utilize to return home, probably when the soldier is at low Hp, but the merit is limited. Also, the time until the teleportation takes 5 seconds so definitely susceptible for enemy fire.
The soldier teleports to the oldest projectile by default, hitting R key toggles the order. And the direction of the camera should be the direction of the projectile's travel, always.
When the soldier teleports to the location of the rocket, the rocket of the target vanishes. It does not swap the location, so the rocket won't be in the first place of soldier.
The rocket launcher holds 4 rockets, and it deals 30% of the original damage. The white body with orange lines are applied on the projectile. All of them emits the crits aura of the team color. The projectile does not give knockback to the enemy. When doing the transmission at the exact moment rocket is about to land on the enemy, is gonna kill the enemy. Regardless of the soldier's body box, the distance is solely responsible for the consideration.

Ice cold Vacation
It allows to fire the sniper rifle without un-zooming. But how many damage you dealt in the past without unzooming is how to charge the weapon. Since it builds up without consuming the charge, it's suited for firing in the same position. The blacked out part of the scope is significantly wider, around 60% area of the original scope is acquired, the zoom magnification is the same.
Dealing 700 damage in the past allows it to reach the max damage. The max damage of this weapon is capped at 140. 140 meaning the headshot is 420 damage.

Hon Hon Frenchman
The sapper is invisible to the enemy, everything sapped by this thing just stops working.
Teleporter for example, the tele keeps spinning. Sentry just doesn't track anything. And the dispenser actually works at 0.3 times efficiency.
I wonder if non-talkative players just keep melee attacking the buildings to notify the engi, saying "there is a spy".

Acid rain. Scout's exotic shotgun.
Or a Toxic rainfall.
Firing against opponents from vertical angle gives better damage, how angled it is is directly affecting the damage. When fired from right above, and assuming all the rounds hit, it deals 150 damage. When fired horizontally, it deals only 50 damage at max.
It has a floaty mode switch. Basically, it just switches the descending speed to be really slow. Allowing the scout to glide. At it, it's without costs. It just allows the scout to toggle the ability. When firing at the angle of 45, the max damage should be 100. When the scout is on ground, the damage is fixed at 60.
It has the basic round capacity of 6, everything else is in accordance with the stock.

It has the basic round capacity of 6, everything else is in accordance with the stock.

Acid rain. Scout's exotic shotgun.
Or a Toxic rainfall.
Firing against opponents from vertical angle gives better damage, how angled it is is directly affecting the damage. When fired from right above, and assuming all the rounds hit, it deals 150 damage. When fired horizontally, it deals only 50 damage at max.
It has a floaty mode switch. Basically, it just switches the descending speed to be really slow. Allowing the scout to glide. At it, it's without costs. It just allows the scout to toggle the ability. When firing at the angle of 45, the max damage should be 100. When the scout is on ground, the damage is fixed at 60.

Figurine magnet
The heavy's fist. While deployed, walks like a zombie. But when there is a medic in the direct sight of line, the heavy rushes in a very first approach. The heavy has to aim. The zombie like hand animation and the third person posture doesn't mean he is actually imitating a zombie, and the walking speed is significantly lowered when not looking at the medic. The movement speed is liner, meaning the movement speed transitions smoothly.