Here is the full list of all 33 Impact Point achievements.
GET 100 KNIFE KILLS
GET 100 HANDGUN KILLS
GET 100 SHOTGUN KILLS
GET 100 MP5K KILLS
GET 100 CROSSBOW KILLS
GET 100 SNIPER KILLS
GET 100 MINIGUN KILLS
GET 100 CHAINSAW KILLS
GET 100 ASSAULT RIFLE KILLS
GET 50 ASSAULT RIFLE KILLS
GET 50 CROSSBOW KILLS
GET 50 KNIFE KILLS
GET 50 CHAINSAW KILLS
GET 50 MP5K KILLS
GET 50 SNIPER KILLS
GET 50 SHOTGUN KILLS
GET 50 WINS
GET 50 MINIGUN KILLS
GET 25 CHAINSAW KILLS
GET 25 SHOTGUN KILLS
GET 25 MP5K KILLS
GET 25 CROSSBOW KILLS
GET 50 HANDGUN KILLS
GET 25 KNIFE KILLS
GET 25 SNIPER KILLS
GET 25 MINIGUN KILLS
GET 25 ASSAULT RIFLE KILLS
GET 20 WINS
GET 100 KILLS
GET 50 KILLS
GET 25 HANDGUN KILLS
GET 5 WINS
GET 25 KILLS