Profession mechanic
Tool belt skills are the engineer's profession mechanic, occupying the F1 – F4 slots above the skill bar. Each of the engineer's healing and utility skills has an associated tool belt skill — equipping a skill in slots 6 – 9 will automatically place the associated skill in the corresponding tool belt slot. These skills are listed in the healing and utility tables below underneath their associated primary skill.
Weapon skills
Two-handed
| Skill | Type | Recharge | Description | |
| Rifle | ||||
| 1 | Hip Shot | Deliver a quick rifle shot from the hip that pierces targets. | ||
| 2 | Net Shot | 10 | Immobilize foes with a net shot. | |
| 3 | Blunderbuss | 10 | Fire a cloud of shrapnel that causes more damage the closer you are to foes. | |
| 4 | Overcharged Shot | 15 | Fire a blast so strong it launches your foe as you fall backward and cures immobilized,crippled, and chilled. | |
| 5 | Jump Shot | 20 | Blast the ground, damaging nearby foes and leaping to your target. |
Dual-wield
| Skill | Type | Recharge | Description | |
| Pistol | ||||
| 1 | Explosive Shot | Fire a shot that explodes on impact, bleeding nearby foes. | ||
| 2 | Poison Dart Volley | 10 | Fire a volley of darts that poison foes. | |
| 3 | Static Shot | 15 | Discharge a lightning shot that bounces between multiple foes, blinding and confusing them. | |
| 4 | Blowtorch | 15 | Unleash flames from your pistol to burn foes. Deal more damage the closer you are. | |
| 5 | Glue Shot | 30 | Coat the target area with a glue puddle that immobilizes foes on impact, then cripples foes that remain within. |
Offhand only
| Skill | Type | Recharge | Description | |
| Shield | ||||
| 4 | Magnetic Shield | 30 | Create a magnetic field that reflects projectiles and can be released to push back foes. | |
| Magnetic Inversion | Release the magnetic field to push back nearby foes. | |||
| 5 | Static Shield | 40 | Electrify your shield, preparing to throw it at foes. If you are hit, the shield discharges,stunning your nearby attacker. | |
| Throw Shield | Throw your charged shield. Dazes foes it hits on the way out and back. |
Aquatic
| Skill | Type | Recharge | Description | |
| Harpoon Gun | ||||
| 1 | Homing Torpedo | Fire a shot that homes in on your foe. | ||
| 2 | Scatter Mines | 12 | Shoot out a spread of remote-detonated mines. | |
| Detonate Mines | Detonate your mines. | |||
| 3 | Retreating Grapple | 18 | Retreat while firing a grappling line at your foe, then pull them toward you. | |
| 4 | Timed Charge | 18 | Fire a timed charge at your target, damaging nearby foes when it detonates. | |
| 5 | Net Wall | 25 | Launch a deployable net wall to immobilize foes caught within. | |
| Deploy Net Wall | Deploy the net wall at its current location, immobilizing foes caught within. |
Slot skills
indicates the healing or utility skill's associated tool belt skill.
Healing
| Skill | Type | Skill Points | Recharge | Description | |
| Elixir H | Elixir | 25 | Drink Elixir H to heal yourself and randomly gain protection, regeneration, or swiftness. | ||
| Toss Elixir H | Tool belt | 30 | Toss Elixir H to randomly grant protection, regeneration, or swiftness to allies. | ||
| Healing Turret | Turret | 3 | 20 | Deploys a turret that heals you briefly, then regenerates you and your allies. | |
| Cleansing Burst | 60 | Overcharge your healing turret, supplying a burst of healing that cures all conditions. | |||
| Regenerating Mist | Tool belt | 60 | Release a mist of healing liquid to regenerate nearby allies. | ||
| Detonate Healing Turret | Tool belt | Detonate your healing turret. | |||
| Med Kit | Device kit | 1 | Equip a kit that replaces your weapon with healing skills. | ||
| Bandage Self | Tool belt | 20 | Bandage your wounds and heal yourself. |
Utility
| Skill | Type | Skill Points | Recharge | Description | |
| Bomb Kit | Device kit | 3 | Equip a kit that replaces your weapon with bomb skills. | ||
| Big Ol' Bomb | Tool belt | 30 | Set a timed charge with a big blast that launches nearby foes. | ||
| Grenade Kit | Device kit | 1 | Equip a kit that replaces your weapon with grenade skills. | ||
| Grenade Barrage | Tool belt | 30 | Throw several grenades at once. | ||
| Elixir B | Elixir | 1 | 40 | Drink Elixir B to gain fury, might, retaliation, and swiftness. | |
| Toss Elixir B | Tool belt | 20 | Toss Elixir B to grant fury, might, retaliation, and swiftness to allies. | ||
| Elixir C | Elixir | 6 | 40 | Drink Elixir C, converting all conditions into random boons. | |
| Toss Elixir C | Tool belt | 30 | Toss Elixir C, converting one condition to a random boon for allies. | ||
| Elixir R | Elixir | 6 | 45 | Drink Elixir R to recover from stun and refill your endurance. | |
| Toss Elixir R | Tool belt | 85 | Toss Elixir R, curing conditions and reviving allies. | ||
| Elixir S | Elixir | 3 | 60 | Drink Elixir S to shrink yourself, recover from stun, and evade attacks. | |
| Toss Elixir S | Tool belt | 60 | Toss Elixir S, either making allies grow and granting them stability, or granting them stealth. | ||
| Elixir U | Elixir | 1 | 60 | Drink Elixir U, gaining quickness and a random utility skill from another profession. | |
| Toss Elixir U | Tool belt | 60 | Toss Elixir U, creating a random spell at the target location. | ||
| Personal Battering Ram | Gadget | 3 | 45 | Launch a[sic] target foe with a concealed ram head. | |
| Launch Personal Battering Ram | Tool belt | 18 | Shoot out a ram's head in front of you, crippling any struck foes. | ||
| Rocket Boots | Gadget | 3 | 30 | Fly backward, damaging foes with your rocket exhaust. Cures immobilized, crippled, andchilled. | |
| Rocket Kick | Tool belt | 20 | Use your rocket boots to do an explosive kick that burns foes. | ||
| Slick Shoes | Gadget | 6 | 60 | Spray oil behind you, knocking down foes. If underwater, foes entering the field are blinded. | |
| Super Speed | Tool belt | 45 | Run at double speed. | ||
| Throw Mine | Gadget | 1 | 18 | Throw out a remote-controlled land mine that damages, knocks back, and removes a boonfrom nearby foes. | |
| Detonate | Detonate your mine to damage foes and remove a boon from them. | ||||
| Mine Field | Tool belt | 45 | Plant five mines around yourself. | ||
| Detonate Mine Field | Tool belt | Detonate your mine [sic], damaging nearby foes. | |||
| Utility Goggles | Gadget | 1 | 40 | Break out of stun, gaining fury and immunity to blindness. | |
| Analyze | Tool belt | 40 | Analyze a foe, applying vulnerability. | ||
| Flame Turret | Turret | 1 | 40 | Deploy a turret that burns foes. | |
| Smoke Screen | 30 | Overcharge your flame turret, releasing a smoke screen that blinds nearby foes. | |||
| Throw Napalm | Tool belt | 60 | Throw a ball of napalm that explodes on impact, burning foes around target location. | ||
| Detonate Flame Turret | Tool belt | Detonate your flame turret. | |||
| Net Turret | Turret | 3 | 30 | Build a net turret that immobilizes nearby foes. | |
| Electrified Net | 30 | Overcharge your turret to fire an electrified net that immobilizes and stuns. | |||
| Net Attack | Tool belt | 60 | Fire a net from your belt to immobilize your foe. | ||
| Detonate Net Turret | Tool belt | Detonate your net turret. | |||
| Rifle Turret | Turret | 1 | 20 | Build a rifle turret that shoots at foes. | |
| Automatic Fire | 30 | Overcharge your rifle turret to fire a burst of bleeding shots. | |||
| Surprise Shot | Tool belt | 10 | Fire a bullet out of your belt. | ||
| Detonate Rifle Turret | Tool belt | Detonate your rifle turret. | |||
| Rocket Turret | Turret | 6 | 60 | Build a turret that fires rockets. | |
| Explosive Rockets | 20 | Overcharge your turret to fire explosive rockets. | |||
| Rocket | Tool belt | 60 | Fire a rocket out of your belt that explodes on impact. | ||
| Detonate Rocket Turret | Tool belt | Detonate your rocket turret. | |||
| Thumper Turret | Turret | 3 | 50 | Build a high-health thumper turret that damages nearby foes. | |
| Thump | 30 | Overcharge your thumper turret to launch nearby foes. | |||
| Shockwave | Tool belt | 90 | Release a shockwave of inertial force to damage nearby foes. | ||
| Detonate Thumper Turret | Tool belt | Detonate your thumper turret. | |||
| Elixir Gun | Weapon kit | 6 | Arm yourself with an elixir gun that replaces your weapon skills. | ||
| Healing Mist | Tool belt | 40 | Vent a healing mist, granting regeneration to yourself and allies. | ||
| Flamethrower | Weapon kit | 3 | Arm yourself with a flamethrower that replaces your weapon skills. | ||
| Incendiary Ammo | Tool belt | 60 | Burn foes with your next three attacks. | ||
| Tool Kit | Weapon kit | 6 | Equip a kit that gives you a variety of tools. | ||
| Throw Wrench | Tool belt | 20 | Throw you [sic] wrench so that it returns to you, striking foes each way. Repair any turretsthat the wrench hits. |
Elite
| Skill | Type | Skill Points | Recharge | Description | |
| Elixir X | Elixir | 10 | 120 | Drink Elixir X, becoming a rampaging brute or whirling tornado. Underwater become either awithering plague or a whirlpool. | |
| Mortar | Turret | 30 | 120 | Build a stationary mortar that you or your allies can fire. | |
| Supply Crate | 10 | 180 | Request a massive supply drop, complete with turrets and bandages. |
Downed and drowning skills
| Skill | Type | Recharge | Description | |
| Downed | ||||
| 1 | Throw Junk | Throw a bit of junk and inflict a random condition on your foe. | ||
| 2 | Grappling Line | 10 | Throw out a grappling line to pull your foe to you. | |
| 3 | Booby Trap | 20 | Set off an explosive booby trap, launching nearby foes with a powerful blast. | |
| 4 | Bandage | 5 | Call your allies for help. Restores health while you channel it. | |
| Drowning | ||||
| 1 | Floating Mine | Throw out a mine that explodes on impact. | ||
| 2 | Anchor | 10 | Sink your foe. | |
| 3 | Buoy | 15 | Inflate a buoy, floating more quickly to the surface. | |
| 4 | Bandage | 5 | Call your allies for help. Restores health while you channel it. |
Auxiliary skillbars
These skills replace the main skillbar after activating the specified primary skill.
Bomb Kit
| Skill | Type | Recharge | Description | |
| 1 | Bomb | Set a timed charge that damages nearby foes. | ||
| 2 | Fire Bomb | 10 | Set a timed charge that burns nearby foes. | |
| 3 | Concussion Bomb | 18 | Set a timed charge that causes confusion to nearby foes. | |
| 4 | Smoke Bomb | 25 | Set a timed charge that creates a cloud of smoke, blinding nearby foes. | |
| 5 | Glue Bomb | 25 | Set a timed charge that creates a puddle of glue, immobilizing and crippling nearby foes. |
Elixir Gun
| Skill | Type | Recharge | Description | |
| 1 | Tranquilizer Dart | Fire a dart that bleeds and weakens foes. | ||
| 2 | Elixir F | 8 | Fire a bouncing glob of Elixir F that cripples foes and grants swiftness to you and allies. | |
| 3 | Fumigate | 12 | Spray a cone of elixir fumes, inflicting poison and vulnerability to foes and curing conditionson allies with every strike. | |
| 4 | Acid Bomb | Elixir | 15 | Leap backward, spraying an acidic elixir on the ground that damages nearby foes. |
| 5 | Super Elixir | Elixir | 20 | Launch an elixir orb, healing allies on impact and creating an area of continual healing. |
Flamethrower
| Skill | Type | Recharge | Description | |
| 1 | Flame Jet | Spray fire in a cone pattern while on the move, burning enemies on the final attack. | ||
| 2 | Flame Blast | 6 | Fire a napalm ball that rolls through foes and explodes. | |
| 3 | Air Blast | 15 | Push back foes and projectiles with a hot air blast. | |
| 4 | Napalm | 30 | Burn foes with a wall of napalm at the target location. | |
| 5 | Smoke Vent | 20 | Vent smoke from your flamethrower, blinding nearby foes. |
Grenade Kit
| Skill | Type | Recharge | Description | |
| 1 | Grenade | Throws a grenade that explodes. | ||
| 2 | Shrapnel Grenade | 5 | Throws a grenade that explodes in a hail of shrapnel, causing bleeding. | |
| 3 | Flash Grenade | 10 | Throw a grenade that explodes in a blinding flash. | |
| 4 | Freeze Grenade | 20 | Throw a grenade that chills enemies with a frigid blast. | |
| 5 | Poison Grenade | 25 | Throws a grenade that explodes in a poisonous cloud. |
Med Kit
| Skill | Type | Recharge | Description | |
| Drop Bandages | 12 | Drop a pack of bandages that provides a little healing. | ||
| 4 | Drop Antidote | 15 | Drop a vial of antidote that cures conditions. | |
| 5 | Drop Stimulant | 20 | Drop a stimulant that grants fury and swiftness. |
Mortar
| Skill | Type | Recharge | Description | |
| 1 | Launch Mortar Shot | 2 | Launch an explosive round from your mortar, damaging foes in the target area. | |
| 2 | Launch Caltrops Mortar | 12 | Launch a mortar round that spreads caltrops in the target area, bleeding and crippling foes who walk through. | |
| 3 | Launch Elixir | Elixir | 15 | Launch a mortar round that heals allies in the target area. |
| 4 | Launch Ice Mortar | 30 | Launch a mortar round that chills foes in the target area. | |
| 5 | Launch Concussion Barrage | 30 | Launch a barrage of rounds that pushes back foes where they land. |
Tool Kit
| Skill | Type | Recharge | Description | |
| 1 | Smack | Smack your foe. Repair turrets. | ||
| Whack | Whack your foe. | |||
| Thwack | Thwack your foe. | |||
| 2 | Box of Nails | 10 | Scatter nails that bleed and cripple foes. | |
| 3 | Pry Bar | 15 | Confuse your foe by smacking them with a pry bar. | |
| 4 | Gear Shield | 20 | Block attacks. | |
| 5 | Magnet | 25 | Pull your target to you. |
