[Trexmaster]

First bug:

For the final fight, reinforcements can have their team settings to where they only fight other reinforcing units and cannot hurt the player's team.

This was observed happening whilst having mercenaries enabled and active in the fight, so that may possibly be the cause as some other players reported this not happening.

In the final fight, the starting snakemen are all on the same team as normal.  Reinforcements happen. The added mobs are hostile to each other and cannot affect any player team units with their attacks, poison tiles do not deal damage to the player's team and AoE attacks will not damage them. This was observed by Slithering Earth only hurting other snakemen (they were not confused) and failing to damage any player team units.

To reproduce:

1. Start the final fight with mercenaries enabled (and have mercenaries).

2. Wait until at least the 3rd round for reinforcements to act/kill enough snakemen so reinforcements occur.

3. Observe the snakemen probably start killing each other instead.

Second bug:

Repair merits only appear to be awarded to players in the first Duyuei guild. This was observed by multiple players, one not in either guild, and one in guild two(myself) performing repairs whilst wall damage was still present (health was below 1,000). I had performed a repair prior to one of the others who was in guild one. They received repair merits while I did not, nor did the other player who wasn't in either guild. I am unsure if the latter is a bug or not but non-guild players seem able to gain things like defense merits so I don't see why it wouldn't tally them up for everyone.

To reproduce:

1. Have the wall raid end with wall health at <1,000 so damage exists to repair.

2. Repair wall damage whilst not in Guild 1.

3. Observe the merit board.

[Neus]

For the bug regarding repair merits, some questions.

1) Did you already hit the merit cap? You can only earn 300 merit points total per reward period.
2) Did you type an emote of proper length?
3) Was it taking physical stamina?

[Trexmaster]

Sure.

1. No. I and the other who were doing repairs had not capped. I was close but I was about 17~ points shy of the cap at the time.

2. Yes. The game verified that our emotes were sufficient (we got the message confirming it).

3. If I recall, yes, but it's been awhile and I don't remember for sure.

[Neus]

The reinforcements bug should be fixed in 2.91 (v3).

As far as the merits bug goes, I can earn them offline and I'm not in the Duyuei guilds, so I suspect something else is going on. Test it a bit more if possible with that in mind.

[Trexmaster]

It might be an issue with multiple people performing the repairs at the same time. I noticed that some repairs after the person did one would be done immediately and not require any posts. For clarity we all had to do one post and got it confirmed by the game, but further repairs would be done without needing a post.

So that's my next best guess and would explain why it wouldn't be replicated offline.