This game actually really grew on me as I figured out how to do the stealth correctly. I did run into an issue or two, one where on one run the rooms had 3 times the enemies as normal, although if the number is chosen randomly it could just have been really bad luck. Sometimes when entering a room I couldn't see where the cone of vision was and was immediately targeted without the chance for stealth. I really enjoyed the stealth aspect despite the minor issues, and think you've come up with a solid jam entry.

Not exactly challenging. The feeling is more of a battle of attrition. The length of the dungeon and only one enemy type makes the journey feel like a slog, and impatience makes me try to kill the enemy faster, which gives them the chance to get into their attack animation, which often dodges my attack for unclear reasons. Similarly, impatience makes me feel like trying to actually sneak through, but it's literally impossible to do so in most generated rooms. And since the enemy patterns are so precisely tuned to the initial weapon lengths, the game is essentially over with the purchase of the King's hammer, which gives the reach necessary to ignore their attacks (maybe the spear does it too, I skipped over that upgrade after the hammer was a disappointing sidegrade). Until then, the most viable strategy is to very slowly pull each enemy one by one. At least their behavior was predictable (outside of some fringe cases where they bounce off each other and so can start their next attack animation sooner than expected). I would have liked a somewhat more even spread of enemies and possibly larger rooms, to make sneaking a more viable tactic (right now a "stealth" playthrough is scrambling to the end with 90% of the dungeon guards trailing behind you). I think this game could at the very least add a risk reward element in which the player is allowed to bail out of the dungeon at each floor to keep what they've earned, but each floor provides better money.

Doesn't start in firefox for some reason. But works good in chrome.

The UI could use some work. Gameplaywise you should add health pickups in the dungeon. I am a casual I need hearts to survive. Also don't throw the player out so unceremoniously. Give them one second to understand that they died.

Couldn't beat the first dungeon, so can't talk about the upgrades. Stealth mechanic works good tho.

I love stealth games so I instantly clicked on yours. Even though the menu is a bit unappealing the gameplay is actually really good and the enemies are well balanced. For some reason it didn't save the money I collected when I died so I couldn't get any upgrades, but a fun experience nonetheless.