The Assassin in 'Game of Thrones: Kingsroad' relies on a unique status effect known as 'Blood Drain'. While the effect itself does nothing on its own, triggering it with specific skills or combos deals damage proportional to the number of stacks currently applied. In short, the Assassin is a class built around the repetitive loop of building stacks and popping them for burst damage.

Blood Drain: Stacking methods, skills, combos, and Artifacts

Blood Drain caps at 8 stacks, with bonus damage scaling based on your count at the moment of activation. Don't fall for the trap of thinking this scales exponentially; it increases linearly by 45% per stack. There is no desperate need to hit the maximum 8 stacks every time. In fact, if you overshoot the cap, you are essentially wasting potential, so do not hesitate to trigger it even if you have fewer than 8 stacks.

Building stacks is generally done through combos, then topping off the remainder with skills to reach your target. For instance, if you use 'Ambush (Enhanced)' and 'Dagger Throw', you only need to land a combo for 4 stacks. Consult the table below for the maximum stacking potential of each skill.As a pro-tip, upgrading the high-tier legendary Artifact 'Rhaegar's Ruby' grants a chance to double your Blood Drain stacks upon application. Given that its other options are also highly effective against enemies afflicted with Blood Drain, it is a top recommendation for any Assassin player.

Recommendation 1: Dagger Combo 1 (2 stacks of Blood Drain)

Much like other classes, Dagger Combo 1 is favored for its brief animation and versatility. If you equip the 'Blood Drain' mastery, every hit from the combo's heavy strike applies a stack and deals bonus damage to afflicted targets. Since Dagger Combo 1 hits twice with heavy strikes, it nets you 2 stacks in total.

The second mastery choice depends on your playstyle or gear set. Picking 'Wrath' helps solve any lingering issues with rage recovery. On the other hand, 'Heavy Attack' leans into a more aggressive profile; not only does it boost damage, but it also prevents enemies from countering your heavy strikes. Investing here ensures enemies cannot dodge or parry, allowing for stable stack building.

As for the final mastery, neither option is particularly useful in boss encounters. If you must choose, 'Wrath' is recommended for mob fights to help spam skills. 'Amplification' boosts active skill damage, but the window is too short to be practical for killing enemies and transitioning to new targets.

Recommendation 2: Dagger Combos 2 and 3 (4 stacks of Blood Drain)

Dagger Combo 2 features more actual hits than the heavy strike input suggests, making it a perfect match for the 'Blood Drain' mastery. By investing in both 'Blood Drain' and 'Annihilation', you can apply up to 4 stacks in a single combo sequence.

Dagger Combo 3 applies stacks strictly according to the heavy strike inputs. Like the second combo, it caps at 4 stacks, but it generally outperforms in terms of damage, rage recovery, and weapon gauge acquisition. However, the animation is longer and more prone to being interrupted, so choose based on your personal preference.

Recommendation 3: Dagger Combos 2 and 3 (3 stacks of Blood Drain, Stagger damage)

This setup involves taking the aforementioned Dagger Combos 2 and 3 but swapping the final mastery for 'Corrosion'. While this reduces your Blood Drain stacks to 3, it significantly boosts Stagger damage. Once an enemy is staggered, they are left defenseless, allowing for a steady follow-up assault. Beware, however, that this is less efficient in areas like the Altar of the Abyss or Altar of Memories, where enemies have overwhelmingly high Stagger gauges.

Bonus: Rapier Combo 1 (1 stack of Blood Drain)

The Assassin's Rapier combos feel sluggish compared to Daggers due to long animations. Combos 2 and 4 suffer from delays during the back-and-forth movement, and Combo 1 is similarly hampered by the post-hit animation, limiting its practical efficiency.

However, you can elevate the efficiency of Combo 1 by utilizing a 'Guard Cancel'. The method is simple: immediately after the final hit of Combo 1 lands, tap and release the block button. This cancels the unnecessary post-delay, allowing you to enter a guard stance momentarily before transitioning smoothly into your next attack. Check the link below for the efficiency of a Guard-Cancelled Combo 1.

※ [Game of Thrones Tips] Attack and defend at once with 'Guard Cancel' (Link)