vsNPC
Lv1は22台(弓2馬1状態において)
Lv2は30台(弓4馬3状態において)
Lv3は130台(弓6馬4状態において)
Lv4は260台(弓7馬6状態において)
VsLv5NPC
http://www.evonypedia.com/evony/npc/npc-ballistae-farming-archery-and-hbr-levels
Archery 08 / HBR 03 (Massive losses due to being in tower range)
Archery 08 / HBR 04 (Smalls losses from units but @ tower safe range)
→Archery 08 / HBR 05 (0 Losses )
→Archery 08 / HBR 06 (0 Losses )
Archery 08 / HBR 07 ( Small losses )
Archery 08 / HBR 08 (Massive losses due to being in tower range)
Archery 08 / HBR 09 (Massive losses due to being in tower range.)
Archery 09 / HBR 01 (Small losses from units but @ tower safe range)
Archery 09 / HBR 02 (0 Losses when using over 575 ballistae )
→Archery 09 / HBR 03 (0 Losses )
Archery 09 / HBR 05 (Small losses from units but @ tower safe range)
Archery 09 / HBR 06 (Small losses from units but @ tower safe range)
Archery 09 / HBR 07 (Small losses from units @ tower safe range)
→Archery 09 / HBR 08 (0 Losses )
→Archery 09 / HBR 09 (0 Losses )
→Archery 10 / HBR 05 (0 Losses )
→Archery 10 / HBR 06 (0 Losses )
→Archery 10 / HBR 07 (0 Losses )
→Archery 10 / HBR 08 (0 Losses )
→Archery 10 / HBR 09 (0 Losses )
→Archery 10 / HBR 10 (0 Losses )
馬5or馬6+弓8が最短で目指せて無傷勝利できるみたいだお
弓9にしちゃうと、馬3か馬8か馬9じゃないとダメージ受けるから弓はストップ8を心がけた方がいいっぽいお