Here are two different lists of marks of legalism.
Legalism can show any of the following signs:
1. Judgmentalism. We're to stand our ground against that judgment.
2. Works-based salvation.
3. Man-centered sanctification, instead of Christ-centered sanctification.
4. Religion that's rules-centered instead of relationship-centered.
5. Religion that's proud, self-congratulatory, feeling superior.
6. Religion that substitutes personal standards for divine truth, and then judges others by those standards.
7. A monastic approach to the world, thinking that we can become holy if only we can withdraw from the world.
Here's a list of marks of legalism from Pastor Richard Caldwell, Jr.
A person or a church or a movement may be legalistic if it's...
1. Centered on man, not on God.
2. Based on rules, not relationships.
3. Substituting personal standards for divine truth, and then judging others by those standards.
4. Desiring monasticism (wanting to withdraw from the world instead of being a light to the world).
5. Wanting men's praise instead of God's praise.
6. Showing false humility.
7. Rebellious toward truth.
8. Exercising authority without humility.
9. Unable to distinguish between dead orthodoxy and living orthodoxy.
Legalism teaches either works-based salvation or man-centered sanctification, instead of Christ-centered sanctification.
The sermon from which I drew the second list is available for free download from the media ministry of FoundersBaptist.org, via Sermon Audio.
Therefore let no one pass judgment on you in questions of food and drink, or with regard to a festival or a new moon or a Sabbath.
(Colossians 2:16 ESV)