Here is the full list of all 43 HordeFighter 2D achievements.
Open 25 Basic Chests
Get 5000 Kills
Get 10 Boss Kills
Get 2500 Kills
Survive 5 Minutes in the Dungeon
Open your first Golden Chest
Survive 5 Minutes in Grassy Knoll
Get 1000 Kills
Survive 1 Minute in the Dungeon
Get 500 Kills
Get your first kill
Get 100 Kills
Get your first Boss Kill
Open Your First Basic Chest
Survive 1 Minute in Grassy Knoll
Start your first run
Play the Tutorial
Survive 10 Minutes in Grassy Knoll
Survive 20 Minutes in Grassy Knoll
Survive 30 Minutes in Grassy Knoll
Survive 45 Minutes in Grassy Knoll
Survive 60 Minutes in Grassy Knoll
Survive 10 Minutes in the Dungeon
Survive 20 Minutes in the Dungeon
Survive 30 Minutes in the Dungeon
Survive 45 Minutes in the Dungeon
Survive 1 Hour in the Dungeon
Kill the hidden boss in the Dungeon
Get 10k Kills
Get 25k Kills
Get 50k Kills
Get 100k Kills
Get 25 Boss Kills
Get 50 Boss Kills
Get 100 Boss Kills
Get 500 Boss Kills
Open 10 Basic Chests
Open 50 Basic Chests
Open 100 Basic Chests
Open 10 Golden Chests
Open 25 Golden Chests
Open 50 Golden Chests
Open 100 Golden Chests