Hit Dice: d8 per guilder level
Hit Points at 1st level: 8 + your Constitution modifier
Hit points at higher levels: 1d8 (or 5) + your Constitution modifier per guilder level after 1st.

Armor: all armor, shields
Weapons: simple weapons, martial weapons
Tools: Choose any two
Saving Throws: Intelligence, Wisdom
Skills: Choose any five skills

Expertise

At 1st, choose two of your skills/tools. Your proficiency bonus is doubled for any ability check you make that uses either of the chosen proficiencies.
At 7th and 15th level, choose two more skills or tools to gain this bonus.

Bonus Skill

At 2nd level, you become proficient in another skill, tool or language (including Thieves' Cant or Druidic). Alternatively, you can add a +2 bonus to any skill in which you already have proficiency. You gain this benefit again at 6th, 10th, 14th, 18th.

Guilder Path

At 3rd level you choose a Guilder path. Benefits of your chosen path are described later. You gain another path benefit at 9th, 13th, and 17th level.

Ability Score Improvement

Per other classes, gained at 4th, 8th, 12th, 16th, 19th.

Decipher

At 5th level, you gain an understanding of writings / code that you do not otherwise know. The DC is determined by complexity / length of the message. A failed check results in partial understanding (i.e., a check of 10 against DC 20 means about 50% is understood). This can also be done with speech, but this is typically much more difficult since you don't have time to study it (DC is doubled).

Reliable Talent

This is gained at 11th level. Identical to the Rogue ability.

Stroke of Luck:

This is gained at 20th level. Identical to the Rogue ability.

Guilders may choose from one of three paths, the Trader, the Delver, or the Explorer.

Traders spend much of their time travelling the continent, searching for opportunities to make deals and profit.

Market Acumen:
At 3rd level, you have Advantage on any check involving knowledge about trade: where to find contacts or resources, coinage, etc.

Negotiator:
At 9th level, you gain Advantage on skill checks during any negotiation (typically Persuasion, Insight, Appraise).

Strong Personality:
At 13th level, you gain proficiency in Charisma saving throws.

Savvy Dealer:
At 17th level, any financial transaction is increased by an extra 1d4*5% (sell, purchase).

Delvers take the road less-travelled, and seek to expand not only their wealth but knowledge. They bypass the typical trading options and look for hidden treasure, ancient locations, and lost knowledge.

Esoteric knowledge:
At 3rd level, you have Advantage with Arcana, History, & Religion checks.

Trap Sense:
At 9th level you have Advantage when attempting to find or defeat traps.

Use Magic Device:
This is gained at 13th level, and is identical to the Rogue ability.

Identify:
At 17th level, you have an uncanny knack for identification of the esoteric. This functions similarly to the spell Identify, but is non-magical in nature. You must make an Intelligence check to succeed, with the DC set by the DM.

Explorers spend much of their time in places few have been before. They seek out not just new trade routes, but entirely new lands and new peoples with which to open trade.

Mapping:
At 3rd level, you have Advantage on any check involving directions or geography, such as cartography, orienteering, navigation, avoiding getting lost, etc.

Speedy Travel:
At 9th level, you any group you lead is not slowed by difficult terrain. In addition, you get an extra 10% speed out of any waterborne craft that you command or operate.

Lore:
At 13th level, you gain Advantage when making skill checks when attempting to understand local customs, legends, and language.

Pathfinder:
At 17th level, your mastery of geography helps you find your way through difficult terrain. For example, you might determine the safest path down a mountain, or recognize vicious currents near the coastline. Success is determined by a Wisdom check, with the DC determined by the complexity of the terrain. Having an overview of the terrain (such as seeing it from a high vantage point) or having other information reduces the difficulty of the check.