Here is the full list of all 19 Key To Heaven achievements.
Kill 10 monsters.
Kill 100 monsters.
Kill 10000 monsters.
Kill 10.000 monsters.
Kill 100.000 monsters.
Reach Level 10.
Reach Level 30.
Reach Level 50.
Reach Level 70.
Reach Level 80.
Reach Level 90.
Complete quest 3.
Complete quest 6.
Complete quest 13.
Complete quest 16
Complete quest 28.
Craft a raft.
Craft a rudder for your raft.
Craft a carpet for your raft.