Lords of Xidit

The Action order is ignored (cancelled) if the City no longer contains the relevant Recruitment or Threat tile when you perform the action; you may not substitute another action (exception: special rules for Raging Titans). (pages 7, 13)

No — you must recruit the least powerful Unit present on that City's Recruitment tile, and you may recruit at most one Unit per Game Year from a given City. (page 7)

Wait instructs your Idrakys to do nothing for that programmed Order: it neither moves nor performs an action in that position. (pages 6, 9)

When a tile is removed you immediately place the tile from the Next Recruitment/Next Threat space onto the corresponding City and then refill the Next space from the top of the pile; if a pile is empty you replenish it from the opposite discard pile (turned over), and if neither can supply tiles you trigger the Awakening of the Titans/Arrival of Reinforcements. (pages 10–12)

When awakened a Raging Titan behaves like a threat but is not tied to any City: it may be eliminated from any City that does not already contain a Recruitment or Threat tile; the Units required are generic, so the player chooses the required Unit types from behind their screen, and eliminated Titan tiles are removed from the game. (pages 12–13)

Ties in reward/census situations grant each tied player the listed reward, while ties in Hall of Fame ranking are broken first by comparing total Units behind screens and then by proximity to the First Player token if still tied; after ranking the lowest player (or two lowest in a five-player first assessment) is eliminated. (pages 14–16)