Sickle

MeleeSupportAbyssal TerrorsTiers I–IV

+20%/+30%/+40%/+50% damage against targets below 30% health

Unlock: Available from the start
Starting weapon for: 10 characters

Community builds that use it

EntrepreneurThe -50% Damage modifier pushes most guides to an Engineering build with Wrench turrets, which ignore it; Support weapons such as Sickle and Pruner exploit the boosted Harvesting. Spend all materials every shop because they are lost at the start of the next wave.
FarmerStart with Pruners, whose Gardens feed the full-health Harvesting bonus, then add Sickles, which scale with Harvesting; buy Crown and give Sickles extra Range.
OldThe small map favours Engineering: Wrench turrets and Landmines stay on screen, so stack Engineering and defensive stats. Double Barrel Shotguns are the gun alternative because enemies bunch up; guides also report Taser/Wand elemental builds.
SaverBuild a base of weapons and key items, then stop spending around waves 8-9 so held materials raise % Damage through the passive and Piggy Bank. Spear, Lightning Shiv, Icicle and Thief Dagger are recommended; Padding became a good pickup after its buff.

Stats by tier

Tier I Common
Damage
5 (+80% Melee Damage, +10% Harvesting)
Cooldown
0.87s
Crit
x2 (3% chance)
Range
125
Tier II Uncommon
Damage
8 (+80% Melee Damage, +15% Harvesting)
Cooldown
0.82s
Crit
x2 (3% chance)
Range
125
Tier III Rare
Damage
12 (+80% Melee Damage, +20% Harvesting)
Cooldown
0.77s
Crit
x2 (3% chance)
Range
125
Tier IV Legendary
Damage
15 (+80% Melee Damage, +25% Harvesting)
Cooldown
0.7s
Crit
x2 (3% chance)
Range
125

Damage in brackets is added from your stats before %Damage multiplies the total; see the damage formula or the calculator.

DPS at tier IV

22.1 DPS with no stats, 45.6 at 20 Melee Damage and 80.9 at 50 (single target, every projectile hits, crits averaged): #44 of 58 weapons that scale with Melee Damage. Full ranking or your own stats.