Here is the full list of all 78 Last-Hit Defense achievements.
Fame level : 5
Fame level : 12
Fame level : 20
Total level of all heroes : 20
Total level of all heroes : 40
Total level of all heroes : 80
Number of cumulative login rewards obtained : 3
Number of cumulative login rewards obtained : 7
Number of cumulative login rewards obtained : 15
Number of successes in the daily game : 30
Number of successes in the daily game : 70
Number of successes in the daily game : 150
Number of friends who have recommended each other : 1
Number of friends who have recommended each other : 3
Number of friends who have recommended each other : 7
Number of relic grade items obtained : 1
Number of relic grade items obtained : 3
Number of relic grade items obtained : 7
Number of items reinforced : 25
Number of items reinforced : 75
Number of items reinforced : 250
Number of items crafted : 50
Number of items crafted : 150
Number of items crafted : 500
Number of cleared regular stages : 4
Number of cleared regular stages : 8
Number of cleared regular stages : 12
Number of cleared regular stages (rank A or higher) : 4
Number of cleared regular stages (rank A or higher) : 8
Number of cleared regular stages (rank A or higher) : 12
Number of cleared regular stages (rank S) : 4
Number of cleared regular stages (rank S) : 8
Number of cleared regular stages (rank S) : 12
Number of times to clear special stages : 10
Number of times to clear special stages : 25
Number of times to clear special stages : 100
Number of scrolls obtained in battle : 50
Number of scrolls obtained in battle : 150
Number of scrolls obtained in battle : 500
Number of hearts obtained in battle : 125
Number of hearts obtained in battle : 625
Number of hearts obtained in battle : 2,500
Number of overcomed deaths in battle : 15
Number of overcomed deaths in battle : 50
Number of overcomed deaths in battle : 200
Number of crystals obtained in battle : 25
Number of crystals obtained in battle : 75
Number of crystals obtained in battle : 250
Number of last-hits with headshot : 2,000
Number of last-hits with headshot : 5,000
Number of last-hits with headshot : 20,000
Number of last-hits with normal attack : 400
Number of last-hits with normal attack : 1,000
Number of last-hits with normal attack : 4,000
Number of last-hits by tower stone : 400
Number of last-hits by tower stone : 1,000
Number of last-hits by tower stone : 4,000
Number of reselections when acquiring abilities : 25
Number of reselections when acquiring abilities : 75
Number of reselections when acquiring abilities : 250
Number of combat abilities obtained : 50
Number of combat abilities obtained : 200
Number of combat abilities obtained : 1,000
Number of magic abilities obtained : 50
Number of magic abilities obtained : 200
Number of magic abilities obtained : 1,000
Number of summoning abilities obtained : 50
Number of summoning abilities obtained : 200
Number of summoning abilities obtained : 1,000
Number of life abilities obtained : 50
Number of life abilities obtained : 200
Number of life abilities obtained : 1,000
Number of last-hit abilities obtained : 50
Number of last-hit abilities obtained : 200
Number of last-hit abilities obtained : 1,000
Total level of other achievements : 7
Total level of other achievements : 15
Total level of other achievements : 30