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to keep track of what you have here — unlocked entries stay ticked off, and you can filter down to what is left.
Data from Steam — Steam Web API Terms of Use. Last updated .
| Achievement | How to unlock | Unlocked by | Rarity |
|---|---|---|---|
| — | 1.7% | Very rare | |
| Interact with the playground somehow. | 3.4% | Very rare | |
| — | 3.6% | Very rare | |
| Test your grip on a headcrab heart. | 3.7% | Very rare | |
| — | 4.7% |
| Very rare |
| — | 8.3% | Rare |
| — | 9.3% | Rare |
| — | 11% | Rare |
| Use the gravity gloves to intercept an incoming enemy grenade in mid-flight. | 11% | Rare |
| Kill a Combine Heavy while their shield is up. | 13.9% | Rare |
| Use the gravity gloves to loot an item off a living Combine soldier. | 15.1% | Rare |
| — | 17.6% | Rare |
| — | 19.2% | Rare |
| — | 19.3% | Rare |
| — | 23.8% | Uncommon |
| — | 23.8% | Uncommon |
| Pick up and smash 50 glass bottles. | 24.1% | Uncommon |
| — | 24.1% | Uncommon |
| — | 24.4% | Uncommon |
| — | 24.8% | Uncommon |
| — | 26.5% | Uncommon |
| — | 30.3% | Uncommon |
| Use the multitool to hack a tripmine. | 32.8% | Uncommon |
| Snatch a Xen grenade from its resting place. | 33% | Uncommon |
| — | 34.3% | Uncommon |
| Collect the SMG. | 36.5% | Uncommon |
| Kill a grunt by shooting their gas tank. | 37.4% | Uncommon |
| — | 38.4% | Uncommon |
| — | 39.8% | Uncommon |
| — | 41.9% | Uncommon |
| — | 46.1% | Uncommon |
| — | 47.8% | Uncommon |
| Feed the snark. | 56.6% | Common |
| — | 56.8% | Common |
| Collect the shotgun. | 62.4% | Common |
| Receive a tasty treat. | 65.2% | Common |
| Install your first pistol upgrade. | 67.2% | Common |
| Break open a supply crate with your hands. | 68% | Common |
| — | 76.4% | Common |
| Loot a corpse. | 82.1% | Common |
| — | 86.7% | Common |
| If you are reading this achievement, Gabe Newell has successfully launched Gnome Chompski into space. If you did not also receive the achievement 'Manufacturing Ascent', Newell has abandoned his plans to shoot Noam Chomsky into space. | 87.9% | Common |