(+)Attack an object to mark it (health or ammo packs, corpses, dropped weapons, dropped hats)
(+)Press the reload key to detonate the marked object, deals a maximum of 150 damage

(!)You can see your marked prop through walls
(!)When an enemy touches or picks up the prop you marked, they become marked but you cannot see them through walls

(-)Backstab deals 200 damage
(-)You cannot detonate marked objects while invisible
(-)Marked objects have a small mine on them, to show if an object has been marked

Yes, another Jojo reference in the game. It would be great

(+)When dealing damage, half is returned to you as ammo (Dealing 10 damage gives you 5 ammo)
(+)15% Less spin up time

(-)10 primary ammo drained while active
(-)50 Max primary ammo on wearer
(-)No ammo from dispensers while active

(+)Every other rocket ignites enemies for 4 seconds
(+)The more damage you take, and the more damage you deal, activate "Fury"
(+)When activating "Fury", damage is increased by 20%, Reload speed is increased by 45% when clip is at 0, and press m2 while active to fire a fast moving rocket that ignites enemies for 8 seconds, and deals mini-crits.
(!)Deal and take the sum of 1000 damage, and press m2 to activate. Lasts 15 seconds

(-)No random critical hits
(-)10% Damage to players
(-)15% Reload speed

(+)Press the reload key to either deal increasing damage to one enemy at a time, or deal 40 damage a second to multiple enemies
(+)Deals 150% damage to buildings
(!)When in single target mode, deals different damage increases depending on max health

• 100-125 HP: 10-70 DPS, increases every second by 10 DPS
  
• 150-175 HP: 25-100 DPS, increases every 2 seconds by 25 DPS
  
• 200 - 300 HP: 50 - 175 DPS, increases every 2.5 Seconds by 30 DPS
  
• 300+ HP: 75 - 300 DPS, increases every 3 seconds by 50 DPS

(-)No random critical hits
(-)When in multi target mode, only +125% damage to buildings
(-)Airblast erases projectiles, instead of reflecting them

(+)Fires in a tight shotgun pattern
(+)Fires in a fixed pattern
(+)50% Damage against players

(-)50% Firing speed
(-)50% Max primary ammo on wearer
(-)No random critical hits
(-)Will minicrit whenever it would normally crit

(+)15% Uber build rate
(+)On Uber: Randomly respawns 2 allies in giant robot form near you, and you become a giant robot as well
(+)When giant robot allies die, they have a 3 second respawns timer but return to mercenaries
(!)Robot stats

• 10x Max health
  
• Speed is halved
  
• Can only use primary weapon
  
• Does not respawns Engineers, Snipers, or spies

(!)Robots spawn in the radius of a buff banner charge around you

(-)You cannot build Uber as a robot on wearer
(-)10% Overheal rate

What do you guys think?

(+)Press the Reload key to throw your weapon
(+)Successfully landing a shot gives you a speed boost for 1.5 seconds, or a 30% less charge time if a shield is equipped
(+)Increased weapon range (3/4ths of the eyelander range)

(!)You can throw your weapon up to 3 times, you get another knife every 5 seconds at a max of 3 knives at a time, you can also pick up thrown knives
(!)Knives stick to surfaces
(!)Knife is nearly the same as a flare(same as in projectile speed, hit box size, etc)but slows down the enemy for 1 second instead of fire damage

(-)No random critical hits
(-/+)15% Damage vulnerability

Everything in the perenthesis and (!)stats won't be shown in the actual weapon, of course. It's just for clarification.

(+)Killing with this weapon gives you heads
(+)Getting heads increases movement speed and jump height
(+)Press the reload key to use a head
(!)Using a head gives 0.75 seconds of Ubercharge, and heals 25 health
(!)Jump height and movement speed are increased by 10% for every head, at a cap of 4 heads

(-)3 Second cool down when using a head
(-)Using heads below 4 decreases your buffs
(-)50% Max primary clip ammo on wearer
(-)50% Max primary reserve ammo on wearer
(-)No random critical hits

(+)50% Damage bonus
(+)Headshots crit, but only for the first bullet
(+)This weapon Holsters 60% Faster
(+)This weapon deploys 60% Faster
(!)Have a Duel with other engineers with this weapon active for a OHKO

(-)50% Firing speed
(-)50% Clip size
(-)75% Ammo reserve
(-)No random critical hits

(+)Backstab disables all healing and regeneration until the victim dies or gets to a resupply locker
(+)Backstab does not remove disguise
(+)Your next attack will be a mini crit

(-)Backstab deals 125 damage
(-)You emit a loud noise on backstab

(+)Attempting to remove the sapper deals 25 damage in an area, and disables the building for 3 seconds
(+)Pressing m1 with no enemy building around you will allow you to throw the sapper, Cool down of 10 seconds
(!)Sapper removal AoE is equal to the size of a scorch shot explosion
(!)Throwing the sapper deals self knock back, allows buildings to take full damage and will take critical damage, disables buildings for 8 seconds, but AoE Is halved

(-)50% Sapper health
(-)4 second cool down when normally sapping

(+)Your first attack will not remove your disguise
(+)Your second attack will also be 100% accurate
(+)Will crit whenever you would normally mini crit
(+)Silent killer: Attack sound -50%

(-)15% accuracy
(-)20% firing speed
(-)No random critical hits