Bestiary entry

Mutant Rat

A sewer-bred skirmisher that lashes with a mutated claw and spits volatile bubbles that burst into lingering poison clouds with four 63%-damage ticks.

AggressiveTrack range 500px

Field identification

Animated field sprite shown in its neutral pose.

Mutant Rat animated sprite sheet, shown at its idle frame

Base life27

Base damage4

Base speed88

Collision radius16px

Level scaling

Monster level is clamped between 0 and 99. Health, damage, and XP rise with level; speed increases up to a fixed bonus.

Mutant Rat stats at representative levels
Level	Life	Speed	Damage	XP	Track range
0	27	88	4	16	500px
10	106	112	13	28	500px
25	210	124	25	47	500px
50	488	124	70	78	500px
99	1418	124	246	139	500px

Values are read from the same gameplay catalogs used by Worlds Worth Looting.

Elite form

Beginning at monster level 5, this species can spawn as a rare gold-stamped elite with the exclusive Mutagen Barrage attack and a guaranteed level-matched item promoted one rarity tier above its normal roll. Each elite affix independently has a 50% chance to add one ordinary, non-promoted item roll.

Mutant Rat elite stats at level 10
Level	Life	Speed	Damage	XP	Track range
10	292	117.6	18	84	575px

Behavior and rewards

Mutant Rat base behavior and reward summary
Temper	Movement	First spawn	Special attack	Defeat result	XP	Radius	Tracking
Aggressive	Ground	Level 0	Mutagen Bubble	Standard reward burst	16	16px	500px

Standard melee

Mutant Rat holds at 50% of its authored melee reach, commits to the visible strike, and can deal at most one hit. Each strike connects only when its target intersects that trail during the corresponding active frames. Moving outside the trails or waiting until their active windows have passed avoids them, while touching the monster still deals 90% of its current outgoing damage.

Mutant Rat standard melee timing and reach
Reach	Approach range	Active clip frames	Windup	Active	Recovery	Base cooldown	Earliest repeat	Swipe damage	Body collision
17px	8px (50%)	4 of 10 (zero-based)	0.22s	0.06s	0.28s	0.25s	0.56s	1.8× physical	0.9× physical

Mutagen Bubble

Spits an authored sewer bubble that damages the hero on impact, then bursts into an authored poison cloud dealing four 63%-damage magic ticks inside the visible fumes.

Mutant Rat special attack timing and damage
Windup	Active	Recovery	Cooldown	Damage	Type
0.75s	0.33s	0.42s	6s	0.396×	magic

Elite: Mutagen Barrage

Spits three authored sewer bubbles simultaneously in a tight twelve-degree fan; each damages the hero on impact and bursts into a bounded poison cloud with four 63%-damage ticks.

Mutant Rat elite-only special attack timing and damage
Windup	Active	Recovery	Cooldown	Damage	Type	Range
0.85s	0.33s	0.42s	13s	0.216×	magic	420px