Damage
The strength of an ordinary tear before enemy-specific rules and other effects.
Compare damage with firing rate. A large hit can remove a small enemy immediately, but slow firing and missed shots still cost time.
An item's advertised damage bonus is an input to the stat calculation. It is not always the exact increase you will see in the HUD.
Tears
The Found HUD shows tears per second: a higher number means more frequent ordinary shots.
Use the final HUD number when comparing builds. Regular tears bonuses, direct fire-rate bonuses and weapon changes use different rules.
The usual regular-tears soft cap is 5 tears per second for an otherwise unmodified normal attack. Direct rate effects and multipliers can exceed it.
Range
How far ordinary tears travel, displayed in tiles in Repentance.
Enough reach lets you keep a safe firing position. Watch whether your shots disappear before reaching the target.
Melee and some special weapons use their own reach rules. Do not assume the normal tear distance describes every attack.
Shot speed
How fast a projectile travels, rather than how often you shoot.
Faster tears can reach moving targets sooner. Some homing or laser-ring builds benefit from slower travel, so more is not always better.
Repentance compensates normal tear travel to preserve range. Do not use the older rule that higher shot speed automatically gives more range.
Speed
How quickly your character moves through the room.
Use it to dodge, reposition and keep firing. Pick a movement pace you can control around spikes and narrow gaps.
Ordinary movement speed is bounded from 0.10 to 2.00. It changes movement, not the firing rate or the speed of a tear.
Luck
A modifier for room-clear drops and particular item effects that explicitly use luck.
Check the effect you actually have. Tough Love reaches guaranteed tooth shots at 9 luck, while another effect can have a different threshold or ignore luck.
There is no universal one-luck-equals-one-percent rule. Lucky Foot's extra pill and machine benefits are separate from its +1 luck stat.
Luck, Hard mode and ordinary room awards