Just a quick primer on killing zombies in the field, based only on my experience. The troop count is an estimate. The lower the level of your troops, the more you will need. It is very difficult to kill zombies at a higher level than your city.
There is a buff that increases your attack by 20 percent which can be earned or purchased with diamonds in the store contained in your briefcase. Other buffs also exist which can assist, such as those added through experience to commanders or obtained through tech research.
| ZOMBIE LEVEL | TROOPS NEEDED | NOTES |
|---|---|---|
| 1 | 700 | Rewards with speedup |
| 2 | 1500 | Rewards with speedup |
| 3 | 2400 | Rewards with speedup |
| 4 | 3000 | Rewards with speedup |
| 5 | 4000 | Rewards with speedup |
| 6 | 7000 | |
| 7 | 8000 | Often rewards with fusion cores needed for crafting commander’s suits |
| 8 | 16000 | |
| 9 | 18000 | Often rewards with fusion cores needed for crafting commander’s suits |
| 10 | 30000 | |
| 11 | 33000 | war horns |
| 12 | 36000 | |
| 13 | 39000 | Will often reward with experience |
| 14 | 44000 | Can reward with alloy barrels and war horns |
| 15 | 49000 | |
| 16 | 54000 |