Stats
There are 6 statistics that enhance the player character. Statistics have a value between 0 and 9.
The primary way of increasing stats is collecting Stat Up consumables, like 
Luck Up, that permanently increase a stat by one, or praying at corresponding Blessing altars.
Other ways to increase stats include:
The game doesn't track stats over max. This means that if you have a stat at 9 (max) and then gain and immediately lose a stat, your stat will drop to 8. This can happen if picking up and dropping 
Loki's Bargain when a stat is maxed.
Summary
| Stat | Effect |
|---|---|
Ability  |
Improves your abilities. Effect can vary depending on ability. Effect on items unknown. |
Damage  |
Increases damage by ≈13.636%
Final Damage = Base Damage * (1 + (0.1363 * # of Stat Increases)) This does not include other multipliers such as crits and item effects |
Luck  |
Better drops from enemies, chests, and gambling shrines. |
Precision  |
Increases critical hit damage by ?.
Final Damage = Base Damage * (2 + (? * # of Stat Increases)) Crits have a base 2x damage multiplier. |
Range  |
Increases weapon range by ?.
On weapons with infinite range such as Hands, range still affects the distance at which auto-aiming functions. |
Speed  |
Increases movement speed by ?. |
Other upgradable variables
During a playthrough, the player can also upgrade two other variables - maximum HP and clip size. They are not tracked like official stats, but nonetheless increase incrementally similar to stats.
Maximum HP can be temporarily increased by 
Midgard Bracelet, and is permanently increased by 
Heart Container or by using 
Shield Converter while having armor. Maximum HP starting value depends on the character and maxes out at 400.
Clip size acts as a bonus added to a weapon's normal ammo capacity, and is kept between different weapons. This bonus starts at 0 and has no known upper limit (it can reach at least +60 and likely any number achievable in normal gameplay). Clip size can only be increased by collecting 
Clip Up items or by using a Tribute altar.
