Tetrahedron intentionally gives the player many resources and ways to convert between them, so it's not surprising there is a wide scope for challenges that manage without one specific resource. I decided it's about time I made a topic to track challenges I've achieved; of course anyone else is welcome to contribute or to improve my results.
These challenges are acknowledged with extra dialogue:
* Defeat the Gentryii using only one potion (possible on ATK or DEF route)
* Defeat the Gentryii using no potion (only possible on ATK route)
Other challenges:
* Defeat the Gentryii without ever taking a shield (possible on either route, but DEF route is very hard)
* Defeat the Gentryii while keeping ATK and DEF balanced
* Reach the final altar without using any previous altar (sadly, the one time I did this, I was so excited at getting a huge altar boost that I forgot to note whether it was possible to defeat the final boss / Gentryii without any altar uses)
* Conquer the hold (Level 5 ending) without ever using magic
Click here to view the secret text
×If a single magic use is allowed, to create the Pickaxe, it's possible to enter Level 6 but not much more than that; magic is by far the most powerful resource system.
Minimum items challenge:
Click here to view the secret text
×Conquer the hold (Level 5 ending): 4 items.
The wooden blade is mandatory. Getting the short sword would require using 3 hand bombs, so it's better to skip it, using 2 hand bombs on the Soulless and Goblin King; I was 30 HP short of defeating the Soulless normally, so this may be improvable. The Goblin-Biter is the fourth item and nothing else is needed. (Switching back and forth between the wooden blade and Goblin-Biter does not count as additional items. Taking another wooden blade after losing access to the first one would count, but isn't necessary.)
Level 6 hold ending: 9 items.
As well as the above four, the Pickaxe, Invisibility Potion and Warp Token are needed to reach Level 6. The Hook is necessary to make any progress in Level 6, and the Portable Orb is needed to open the gate to the second half of the level. It's possible to reach and defeat the brained Adder with nothing else.
Level 7 hold ending / Gentryii: In progress.
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50th Skywatcher