diff --git a/TODO b/TODO
index 67a8ca9..3cb8d82 100644
--- a/TODO
+++ b/TODO
@@ -87,7 +87,7 @@ Content-Type: application/issue
 ID: 6
 Type: feature
 Title: implement remaining Logger level methods
-Status: in-progress
+Status: done
 Priority: high
 Created: 2026-03-13
 Relationships: dependsOn:5
diff --git a/src/logger.ts b/src/logger.ts
index 572f3a3..f43d18d 100644
--- a/src/logger.ts
+++ b/src/logger.ts
@@ -1,8 +1,11 @@
 import {
     LogLevel,
     DEBUG,
-    NOTSET,
+    INFO,
     WARNING,
+    ERROR,
+    CRITICAL,
+    NOTSET,
     checkLevel,
 } from './log-level';
 import { 
@@ -173,6 +176,34 @@ export class Logger extends Filterer {
         if (this.isEnabledFor(DEBUG)) { this._log(DEBUG, msg, options) }
     }
 
+    /**
+     * Log 'msg % args' with severity 'INFO'
+     */
+    public info(msg: string, options?: LogOptions) {
+        if (this.isEnabledFor(INFO)) { this._log(INFO, msg, options) }
+    }
+
+    /**
+     * Log 'msg % args' with severity 'WARNING'
+     */
+    public warning(msg: string, options?: LogOptions) {
+        if (this.isEnabledFor(WARNING)) { this._log(WARNING, msg, options) }
+    }
+
+    /**
+     * Log 'msg % args' with severity 'ERROR'
+     */
+    public error(msg: string, options?: LogOptions) {
+        if (this.isEnabledFor(ERROR)) { this._log(ERROR, msg, options) }
+    }
+
+    /**
+     * Log 'msg % args' with severity 'CRITICAL'
+     */
+    public critical(msg: string, options?: LogOptions) {
+        if (this.isEnabledFor(CRITICAL)) { this._log(CRITICAL, msg, options) }
+    }
+
     /**
      * A factory method which can be overriden in subclasses to create
      * specialized LogRecords.
diff --git a/tests/unit/logger.test.ts b/tests/unit/logger.test.ts
index c88e98a..db1eb75 100644
--- a/tests/unit/logger.test.ts
+++ b/tests/unit/logger.test.ts
@@ -124,32 +124,60 @@ describe('Logger', () => {
         });
     });
 
-    describe('debug', () => {
-        test('invokes handler when level is DEBUG', () => {
-            const logger = new Logger('test', DEBUG);
-            const emitted: LogRecord[] = [];
+    describe('level methods', () => {
+        let logger: Logger;
+        let emitted: LogRecord[];
 
-            class TestHandler extends Handler {
-                emit(record: LogRecord) { emitted.push(record) }
-            }
+        class TestHandler extends Handler {
+            emit(record: LogRecord) { emitted.push(record) }
+        }
 
+        beforeEach(() => {
+            logger = new Logger('test', DEBUG);
+            emitted = [];
             logger.addHandler(new TestHandler(DEBUG));
-            logger.debug('test message');
-            expect(emitted.length).toBe(1);
-            expect(emitted[0].scope).toBe('test');
         });
 
-        test('does not invoke handler when level is above DEBUG', () => {
-            const logger = new Logger('test', WARNING);
-            const emitted: LogRecord[] = [];
+        test('debug emits at DEBUG level', () => {
+            logger.debug('msg');
+            expect(emitted.length).toBe(1);
+            expect(emitted[0].levelno).toBe(DEBUG);
+        });
 
-            class TestHandler extends Handler {
-                emit(record: LogRecord) { emitted.push(record) }
-            }
+        test('info emits at INFO level', () => {
+            logger.info('msg');
+            expect(emitted.length).toBe(1);
+            expect(emitted[0].levelno).toBe(INFO);
+        });
 
-            logger.addHandler(new TestHandler(DEBUG));
-            logger.debug('test message');
+        test('warning emits at WARNING level', () => {
+            logger.warning('msg');
+            expect(emitted.length).toBe(1);
+            expect(emitted[0].levelno).toBe(WARNING);
+        });
+
+        test('error emits at ERROR level', () => {
+            logger.error('msg');
+            expect(emitted.length).toBe(1);
+            expect(emitted[0].levelno).toBe(ERROR);
+        });
+
+        test('critical emits at CRITICAL level', () => {
+            logger.critical('msg');
+            expect(emitted.length).toBe(1);
+            expect(emitted[0].levelno).toBe(CRITICAL);
+        });
+
+        test('level methods respect effective level', () => {
+            logger.setLevel(ERROR);
+            logger.clear();
+            logger.debug('no');
+            logger.info('no');
+            logger.warning('no');
             expect(emitted.length).toBe(0);
+            logger.error('yes');
+            logger.critical('yes');
+            expect(emitted.length).toBe(2);
         });
     });