Castle Invasion: Throne Out
19 Achievements
1,000
5-6h
Automatic Charges
Fully Upgrade the Crossbow
50
31.7%
How to unlock the Automatic Charges achievement in Castle Invasion: Throne Out - Definitive Guide
If you plan on 100% this you're going to be replaying levels and trying to maximize weapons in any way that you can. You upgrade your weapons with the goal of maximizing their effectiveness through gold coins. These coins are obtained by killing off enemies and keeping your multiplier (combo) up.
Gold farming:
One of the easiest and earliest levels to gold farm on is level 7. Here you will face plenty of easy to kill enemies. This will allow you to utilize your bow to one shot each of them and work your way towards a higher multiplier. You will average between 150-200 coins per playthrough if you grind this level and pick up all the coins. This will allow you to maximize your weapons, upgrade your speed, 3 star levels quicker, etc.
Hope this helped out a little bit!
You upgrade weapons/skills by collecting coins during battles and then selecting the hammer/anvil at the top of the level select screen. The later levels usually give more coins, so it's best to just keep playing straight through the game and upgrading what you can while you go. You can replay previous levels to collect more coins if you are struggling on a current level to upgrade your weapons and hopefully making things easier for you.
There are 3 things you need to upgrade for the Crossbow:
Crossbow Range:
Level 1 - 60G
Level 2 - 130G
Level 3 - 260G
Crossbow Reload Speed:
Level 1 - 65G
Level 2 - 140G
Level 3 - 250G
Crossbow Speed:
Level 1 - 75G
Level 2 - 100G
Level 3 - 200G
Once you have upgraded all possible things for the Crossbow, the trophy will pop.