Here is the full list of all 16 Unsafe achievements.
Win one map.
Win one map alone.
Win one map with a full group.
Lose once.
Lose by time out.
Kill one enemy
Revive one friend
Repair one suit
Repair a suit while its on low oxygen levels.
Win a game without using any tools
Win a game after using all tools at least once.
Finish all power panels in less than 5 minutes,
Try the "Exterminate Xenos" button, just in case...
Pick up the multipass for the first time.
Be left behind, while the rest of the team escapes.
Find all data fragments in Black Monolith