Worked with my Discord server to pull together this list of bugs in Iron Horse. These aren't one off, occasional issues, these are "most times we play" kind of issues.
Boss 1
Boss 2
Boss 3
Boss 4
In general
Sound problems seem to occur after wipes, but this is not necessarily the case
Boss 1
- Before boss 1 appears, once all the ground level ads are cleared, mortar guys keep respawning. No way of progression without wiping
Boss 2
- RPG ads occasionally get stuck in their spawns on Sector A and C, this sometimes means that there is no RPG on one side, though sometimes there are two on A or C, not consistent
- Sometimes Restorer hives do not work in the Control Room, meaning that the person in there operating the controls can't stay alive once the window is broken
- Occasionally the codes ("#45" etc.) will change on the display while they're being displayed - does that sometimes mean that somebody reporting the original code and leaving the airlock before the change could be reporting the wrong screen?
Boss 3
- Unless fire is the last phase of the colour phases (resetting Sector A, B, C), there is around a 25% chance that the furnace tower will catch fire again at the top, this makes reading the letter codes in the final phase difficult, and I imagine this annoys speed runners
- Sometimes skills cease working - for example, a healer can't use a hive or chem launcher to heal the team - this makes the run difficult if not impossible
- Probably in ~10% of cases, the chain lifts cease working for individuals in the group, meaning they can't go to the top of the tower
- In around 20% of cases one or more members of a team will start to experience sound problems in this encounter - typically this means that sirens/klaxons aren't audible, gunfire is sporadic, or missing, lava gates making no sound as they turn
- There is often lag in the diagnostics screen on the tower when doing the letter phase, and given this is time critical, it's pretty frustrating
Boss 4
- In around 20%-25% of cases, sound largely disappears in this encounter for multiple players - this means that some sounds (mortars) can be heard, but footsteps of ads etc are lost. Player gunfire is also sporadic/bursty
- Occasionally the RPG ads at the rear of the arena do not appear
- In around 60% of cases there are instances of the boss being interrupted during her special move, but still launching her grenade, often causing wipes
In general
Sound problems seem to occur after wipes, but this is not necessarily the case