Villager's Hideout - Some Bug fixes & Balancing player power

Power balance

• Expected time to destroy gate: 120 -> 55
• Expected time to kill orc: 420 -> 45
• Orc now gets XP based on level of villager, his own level and crit multiplier
• Orc now getting bonus xp by level of villager killed

Gameplay Changes

• Fixed tower projectile following orc forever
• Fixed tower projectiles not dying
• Fixed orc not being able to access his perk tree
• Attack Skill Buff from 0.25 -> 2
• Heal Skill from 200 -> 50%
• Added more texts to guide player