UNO
12 Achievements
1,000
6-8h
Good Eye
Successfully Challenge a missed call UNO 15 times.
50
11.08%
How to unlock the Good Eye achievement in UNO - Definitive Guide
Problem is that the AI can also challenge the other AI and if they do that they will always be faster than you, even if you spam Y.
EDIT: Just did a few rounds and my impression is that you get a successful UNO challenge call after 7-8 tries. Every other time the AI will either call UNO or another AI will steal your challenge call.
Also I've never seen the AI make a challenge call when the other AI's last but one card was black. That's your chance.
When an opponent goes down to one card but fails to call out “UNO!”, you can press to challenge their missed call, forcing them to draw two additional cards. The A.I. often forget to call “UNO,” so this will come naturally as you play against them.
(Offline or Online)
This trophy is for successfully challenging a missed UNO call at least 15 times. As mentioned in the Be Heard trophy, a player can call UNO when they get down to their second-to-last card. If these players forget to call UNO, you can challenge them by pressing the button and force them to draw two cards. This trophy is cumulative throughout any games you play.