Let's break this down into the key timings and patterns you need to watch for since the endings really depend on your execution during specific story beats. The loyalty missions become crucial right as you enter act 3, especially timing your completion before triggering the major canvas confrontation. During alicia's questline, pay attention to the dialogue choices when she starts showing signs of instability - there's a specific window where your responses determine if she falls into the delusional state or breaks through.

For the maelle path execution, you'll want to complete at least 4 loyalty missions before the final sequence triggers, watch for the subtle cue when the canvas starts flickering during conversations, that's your timing window to reinforce those character bonds. The verso route needs precise timing on the truth revelations, specifically when party members start questioning reality - complete their personal quests right after these moments for maximum impact.

The trickiest timing comes during the erasure sequences, since character positions and previous quest completions determine who shows up where. If you're aiming for the full emotional impact ending, make sure to position yourself near key story landmarks during the final acts, and time your dialogue choices right as the canvas manifestations appear. Getting the timing wrong here can lock you out of some of the more nuanced ending variations especially around alicia's final state and the farewell sequences.