Ens orientem amb la brúixola.

Ens is the 1st person plural reflexive pronoun in Catalan. In this sentence, it means ourselves.

So:

• ens orientem = we orient ourselves / we get our bearings

Catalan often uses a reflexive structure where English might use either a reflexive form or a more natural expression like find our way or get oriented.

Orientem is the present indicative, 1st person plural form of orientar.

The verb endings for a regular -ar verb in the present include:

• jo oriento
• tu orientes
• ell/ella orienta
• nosaltres orientem
• vosaltres orienteu
• ells/elles orienten

So orientem means we orient.

Because the sentence has ens, the full idea is we orient ourselves.

Because in a normal affirmative sentence with a conjugated verb, Catalan object and reflexive pronouns usually go before the verb:

• Ens orientem.

You would attach the pronoun to the end in structures like:

• infinitive: orientar-nos
• gerund: orientant-nos
• affirmative imperative: orientem-nos!

So orientem-nos by itself would sound like an imperative (let’s orient ourselves!), not a plain statement.

Yes. In this sentence, the verb is being used reflexively: orientar-se.

There is an important difference:

• orientar = to orient, direct, guide something/someone
• orientar-se = to orient oneself, get one’s bearings, find one’s way

Examples:

• El mapa orienta els excursionistes.
  The map guides the hikers.

• Els excursionistes s’orienten amb el mapa.
  The hikers get their bearings with the map.

So in your sentence, ens orientem means the subject is doing the action to itself: we orient ourselves.

Amb usually means with.

Here it introduces the instrument or means used to do the action:

• Ens orientem amb la brúixola.
  We orient ourselves with the compass.

So amb works like English with in phrases such as:

• write with a pen
• cut with a knife
• navigate with a compass

Because brúixola is a feminine singular noun, so it takes the feminine singular article la.

• la brúixola = the compass

A learner often notices that many nouns ending in -a are feminine, and brúixola follows that pattern.

So:

• la brúixola
• not el brúixola

Catalan often uses the definite article in places where English might use the, a, or sometimes no article at all, depending on context.

So amb la brúixola is very natural in Catalan.

In English, depending on the situation, you might say:

• with the compass
• with a compass
• using a compass

Catalan chooses la brúixola here as a normal, idiomatic way to refer to the instrument being used.

Yes, absolutely.

The difference is:

• amb la brúixola = with the compass
  This may refer to a specific compass, or simply sound like the normal generic instrument in context.

• amb una brúixola = with a compass
  This emphasizes one compass / any compass, or introduces it as new information.

So both are possible, but they do not sound exactly the same.

Yes. Catalan word order is somewhat flexible.

The neutral order here is:

• Ens orientem amb la brúixola.

But you could also say:

• Amb la brúixola ens orientem.

That version puts more emphasis on amb la brúixola.

The meaning stays basically the same, but the focus shifts slightly.

Brúixola is pronounced roughly like BROO-shu-luh in a broad English approximation.

A few useful points:

• the ú shows that the stress falls on the first syllable
• the x here sounds like sh

So the stressed part is brúi-.

The written accent is important because it tells you where the stress goes. Without it, a learner might guess the stress incorrectly.