Baldur's Gate 3 player beats the game in Honour Mode by exclusively casting one of the worst spells in D&D 2,469 times

pcgamer.com:

Dungeons and Dragons fans could argue forever about which spell is the worst in the game, but it's generally agreed that True Strike is a contender. The cantrip grants the caster an advantage on their next attack roll, meaning you sacrifice your current turn for a better chance of hitting your target in the following round. 

In theory, it poses an interesting tactical quandary. In practice, there are just too many alternative uses for a turn to make casting True Strike worthwhile. You could cast it with a bonus action via something like the Sorcerer's quickened spell, but even then you'd be better off casting almost anything else.In other words, True Strike is practically useless, which made it inevitable that some clever clogs would try to complete Baldur's Gate 3 with it.

Enter Fracture, a gaming YouTuber who has attempted to complete Baldur's Gate 3 with many ridiculous self-imposed restrictions, like playing through the game at level one or without taking a long rest. His latest run is by far the most extreme, however, as not only does he limit himself to only using True Strike, he also sets the game to Honour Mode. So if he dies, it's game over.

As reported by GamesRadar, Fracture makes clear he isn't using any clever workarounds to deal with enemies and other problems posed by the game. «I didn't use explosives. There were no necrotic corpse shenanigans. I didn't attack my enemies or use weapon special abilities that deal damage. There were no offensive spells of any kind, apart from the all-powerful, unstoppable True Strike.»

With only True Strike to hand, Fracture can't beat enemies through combat (at least, not initially) so to progress through the early part of the game, he uses stealth and the Disguise Self spell to access dialogue options from other races. 

This enables him to sneak and bluff his way to the mage's tower in the Underdark, where he picks up the Boots of Stormy Clamour, which add Reverberation to an enemy when he inflicts a condition on