duolingoberd
Solves
| Challenge | Category | Value | Time |
| Warm Up | Warm Up | 20 | |
| Base64 | Warm Up | 20 | |
| QR | Warm Up | 20 | |
| Secure Shell | Warm Up | 20 | |
| Simple Overflow | Binary | 20 | |
| Forensics Warm Up 1 | Forensics | 20 | |
| Web warmup | Web | 20 | |
| Discord | Warm Up | 10 | |
| What is ROT? | Cryptography | 50 | |
| Beginner Reverse 1 | Reverse Engineering | 50 | |
| Linux Tutorial 1 | Linux | 20 | |
| Find it! | OSINT | 500 | |
| Linux Tutorial 2 | Linux | 20 | |
| Linux Tutorial 3 | None | 20 | |
| Linux Tutorial 4 | None | 20 | |
| Schrödinger's Cat | Miscellaneous | 20 | |
| Forensics Warm Up 2 | Forensics | 50 | |
| Hex To ASCII | Mini Game | 100 | |
| The game of NIM | Mini Game | 20 | |
| Schrödinger's Cat 2 | Miscellaneous | 140 | |
| Fermat's RSA | None | 20 | |
| Happy CNY! | Miscellaneous | 20 | |
| File Signature | Forensics | 20 |