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Data from Steam — Steam Web API Terms of Use. Last updated .
| Achievement | How to unlock | Unlocked by | Rarity |
|---|---|---|---|
| Complete all challenges in coop mode | 1.7% | Very rare | |
| Complete all challenges in a single player mode | 3.4% | Very rare | |
| Resurrect an ally in coop mode | 7.7% | Rare | |
| Kill 800 spiders | 8.8% | Rare | |
| Kill 400 scorpions |
| Rare |
| Kill 600 fleas | 9.6% | Rare |
| Kill 10 enemies with a single shot from a railgun | 16.3% | Rare |
| Detonate 50 bombs with a single shot | 17% | Rare |
| Reach 40 000 points in arcade mode | 18.9% | Rare |
| Reach 30 000 points in arcade mode | 24.2% | Uncommon |
| Kill 1000 centipedes | 27.9% | Uncommon |
| Kill 15 enemies in rapid succession | 34.1% | Uncommon |
| Reach 20 000 points in arcade mode | 34.5% | Uncommon |
| Survive 3 minutes | 40.6% | Uncommon |
| Kill the enemy without doing damage to it | 43.2% | Uncommon |
| Reach 2 000 points without missing a single shot. | 51.6% | Common |