Achievement and long-term title systems often reward things you're already doing as part of normal play — which makes them easy to overlook, even though the rewards attached to them are real and sometimes substantial.
Review the achievement list periodically
A periodic scan through available achievements — monthly is reasonable — often reveals ones you're close to completing without realizing it, or ones worth slightly adjusting your play to capture, since some are close to free given what you're already doing.
Some achievements reward long-term consistency specifically
Login streaks, cumulative spending thresholds, or long-term participation counts are common achievement types that specifically reward consistency over time — these are worth being aware of early, since missing a streak early on can mean restarting a long-term count.
Don't chase achievements at the expense of good decisions
If completing a specific achievement would require a genuinely bad in-game decision (like an inefficient resource spend purely to hit a threshold), it's usually not worth it — treat achievements as a bonus layer on top of good play, not a reason to play worse.
Titles from achievements can carry real bonuses
As with prestige-based titles, check whether achievement-earned titles carry passive bonuses beyond the cosmetic recognition — an easy thing to overlook if you're not specifically checking.
