Tainted Grail: The Fall of Avalon Boss Guides#
This page gathers the bosses confirmed to exist in Tainted Grail: The Fall of Avalon. One honest caveat up front: as of this page’s last check (October 2026), neither the developers nor any verifiable source has published per-boss health pools, damage numbers, or phase-by-phase breakdowns. Rather than invent “X thousand HP, three-phase strategy” tables, this page sticks to what can actually be confirmed: a verified roster, who these bosses are, and how to approach each fight.
Verified Boss Roster#
The roster below draws on the Fextralife Wiki bosses page along with coverage from GameBrief, TheGamer, and similar outlets:
| Boss | Verified Info |
|---|---|
| Galahad The Pure | One of the Round Table knights of Arthurian legend, encountered in a mutated form |
| Perceval | A Round Table knight who appears as a boss in the game |
| Sir Bertilak | The Green Knight from the legend of Sir Gawain and the Green Knight |
| Gawain | A Round Table knight whose legend is deeply entwined with the Green Knight’s |
| Caradoc | Core NPC and endgame boss: determined to end any possibility of Arthur’s resurrection |
| King Arthur | Endgame boss: the legendary king who has been dead for 600 years |
| Wyrdstalker | A creature warped by the Wyrdness |
| Frantic Berserker | A berserker-type enemy |
| Queen Sagremor | A regional boss |
| Senan the Giant | A giant-type enemy |
That is the full confirmed list for now — anything beyond these ten names falls into the speculation this page deliberately avoids.
Where This Roster Comes From#
These bosses all trace back to clear legendary roots:
- The Round Table line: Galahad The Pure, Perceval, and Gawain are classic Knights of the Round Table from Arthurian legend — on this game’s timeline, set 600 years later, they persist on the island of Avalon in mutated forms
- The Green Knight and Gawain: Sir Bertilak is the Green Knight from Sir Gawain and the Green Knight, a direct echo of the Round Table knight Gawain — the pairing carries dramatic weight in both the original tale and the game
- Mutated creatures: Wyrdstalker is tied directly to the Wyrdness, while Frantic Berserker, Senan the Giant, and Queen Sagremor cover different enemy sizes and archetypes
- The two endgame bosses: Caradoc and King Arthur carry the heaviest story weight — the former is the core NPC who breaks you out in the prologue, the latter is the fallen king the entire worldbuilding revolves around
The Endgame Duel: Caradoc or King Arthur#
The game’s branching ending comes down to a fixed binary duel:
- The main story revolves around collecting King Arthur’s soul shards, and in the end you must decide whether Arthur is resurrected at all
- The NPC Caradoc wants to end any chance of Arthur’s return for good
- At the endgame, you choose between dueling Caradoc or dueling King Arthur
- The ending also hinges on which of 8 candidate NPCs inherits Arthur’s power
There is no “correct answer” for the final boss fight: whoever you face, both the fight itself and the story’s outcome change. One detail worth remembering: Caradoc can be killed in the prologue (he drops gear, grants a hidden achievement, and jumps you straight to level 4 — see Hidden Content), and that choice reshapes the endgame matchup. For a full breakdown of the endgame decision, see the Endgame Content page.
Experiencing the other endgame route means replaying the main story in New Game Plus: NG+ carries over your level and equipment but stacks a 50-point armor penalty per cycle — the more loops you run, the thinner your defenses get, and that mechanic is exactly where endgame boss pressure comes from (see Endgame Content for details).
General Approach to Boss Fights#
There are no move-by-move numbers to lean on, but the game’s combat mechanics (see the Combat System page) make these general boss-fight principles hold up:
| Principle | Why It Works |
|---|---|
| Manage stamina first | Both physical attacks and the Dash (costs 1/5 of the stamina bar) drain stamina; running dry mid-fight leaves you helpless |
| Parrying is a high-reward move | A successful parry chains into an Execute; the Parry King skill extends the parry window by 0.1-0.3 seconds |
| Perfect Evade the big attacks | Evade has a perfect-dodge timing window, making it the core answer to wide-area attacks |
| Actually use weapon swapping | Melee, bow, magic, and thrown weapons swap seamlessly in combat — change your approach by phase |
| Night fights at your own risk | The Wyrdness grows stronger at night; Wyrd-infected enemies hit harder but grant 1.5x experience |
| Difficulty is always adjustable | Five difficulty levels can be switched anytime in the options menu; dropping down when stuck is nothing to be ashamed of |
How the general approach maps to each boss type (extrapolated from the confirmed sizes and archetypes):
| Boss Type | Suggested Approach |
|---|---|
| Round Table knights (Galahad, Perceval, Gawain, the Green Knight) | Humanoid enemies — parries and backstabs pay off; win the rhythm battle |
| Giants (Senan the Giant) | Big bodies usually mean long reach but slow moves; a well-timed Evade beats hard blocking |
| Mutated creatures (Wyrdstalker, Frantic Berserker) | Mechanic-driven enemies — watch for the extra threats their Wyrd attributes add |
| Endgame bosses (Caradoc/King Arthur) | The exam on everything you have built; how complete your build is decides your margin for error |
Pre-Fight Checklist#
Built around verified skill numbers (full details on the Skill System page), here is what to confirm before challenging a boss:
| Preparation Item | Verified Basis |
|---|---|
| Stamina endurance | The Frequent Exercise skill grants +7 max stamina |
| Melee damage | Godly Physique boosts melee damage by 5%-15%; Quickened Strikes boosts attack speed by 2%-6% |
| Parry counterplay | Parry King extends the parry window by 0.1-0.3 seconds; a successful parry chains into an Execute |
| Mobility margin | Agility reduces Dash stamina cost by 20%-60% (Dash costs 1/5 of the stamina bar per use) |
| Spell damage | Arcane Teachings boosts spell power by 10%-50%; Mana Battery expands your mana reserve |
| Summon upkeep | Summons drain mana for as long as they stay active — before a long boss fight, make sure your mana pool can keep up |
The Origin Potion can reset skills and attribute points but is extremely rare, so do not walk into the endgame bosses with a half-finished build.
Boss Fights, Difficulty, and Save Rules#
The cost of each boss attempt is set by the difficulty settings and save rules, and both are clearly documented:
- The five difficulties (Story Focus, Explorer, Adventurer, Veteran, Survival Mode) can be switched anytime from the options menu — dropping down when a boss walls you is an officially supported strategy
- Story Focus is an add-on unlocked alongside Explorer, and Survival Mode is an add-on unlocked alongside Veteran
- In Survival Mode you can only save at campfires, and death is permanent: a failed boss attempt on this setting means the entire run is over, so check where the nearest campfire is before committing
- On normal difficulties, death sends you back to your latest save, so a boss attempt mainly costs the time spent running back and re-pulling the fight
For more on saving and campfires, see the Practical Tips page.
How Difficulty Changes Boss Fights#
How boss fights feel across the difficulty tiers is one of the clearest expressions of this game’s difficulty system:
| Difficulty | Boss Fight Experience |
|---|---|
| Story Focus / Explorer | Forgiving — a good window to practice the mechanics |
| Adventurer (standard) | The boss strength the game was designed around |
| Veteran | Stronger enemies, noticeably less room for error |
| Survival Mode | One failed boss fight ends the entire run — the ultimate challenge |
Since difficulty can be switched anytime (options menu), “learn the movesets on low, win on high” is a perfectly viable path through the roster.
What This Page Deliberately Leaves Out#
The following have not been published by the developers or any verifiable source, and this site will not speculate:
- Exact health, attack power, or weakness values for each boss
- Move-by-move breakdowns and phase transitions
- Drop lists for each boss
- Any boss beyond the roster above (the game’s total boss count has no official figure, and Fextralife’s list is not complete)
- The exact ways the Round Table knight bosses tie into main quests
If you run into a boss not listed on this page, trust what you see in-game and verify it yourself; this site would rather write less than invent entries for the roster.
Related Pages#
- Combat System — a detailed breakdown of parry, Execute, Evade, and other core mechanics
- Skill System — numbers for combat-oriented skills like Parry King
- Endgame Content — soul shard collection and the endgame choice analyzed
- Hidden Content — the special route for killing Caradoc early in the prologue
- Multiplayer Status — the game is strictly single-player; there is no “team up against bosses”
- Practical Tips — hands-on advice for stamina management and campfire saves
- Arthurian Lore — where the knights’ mutated forms and the Wyrdness come from