A tank-based setup for Kullervo allowing him to survive comfortably in Steel Path Missions.

Using a full-umbral setup grants Kullervo an impressive 3374 HP and 1820 Armor (post-update 34). When Arcane Reaper is procced and Health Conversion is fully built up, his armor value goes up to 3830 a.k.a. 92% damage reduction. Arcane Reaper also provides +24 HP/s healing to sustain his above-average health pool.

[Adaptation] greatly helps with survival, and at max stacks can bring his damage reduction close to 99%, though this can be swapped out with [Rolling Guard]. [Stretch] and [Continuity] are used increase [Kullervo]'s range and crit chance duration from his 1.

Getting health orbs from kills should be easy by subsuming Lycath [Hunt] on his 4 (as well as help him sustain on energy economy with [Equilibrium]). [Kullervo]'s insane ability to melee DPS with 192% strength also allows Arcane Reaper's bonus armor and healing to always be up. Recommended you pair Kullervo with a CO-primer weapon like the [Cedo], [Epitaph], or [Kuva Nukor] to lengthen Lycath's [Hunt]'s duration per kill (remember that enemies with 5 or more elements procced on them will add to the timer). And be sure to equip a suitable melee with Conditional Overload to rack up on those damage bonuses.

With Update 33.6 introducing Overguard-gating, it is recommended that you use [Kullervo]'s 2 sparingly and not heavily spamming it. In order for [Kullervo] (or any other warframe) to pick up health orbs, he needs to be missing health and trigger [Equilibrium]. Using [Synth Fiber] on a viable companion like a [Panzer Vulpaphyla] can mitigate this issue. Your arcanes and [Health Conversion] should help keep you from dying long enough and give you a chance to press 2 in really dire situations (enemies below level 200 shouldn't be strong enough to overwhelm Arcane Reaper's heal rate).

Use one red Archon Shards to boost his ability strength over 200%. His 3 will have 100% damage redirect on linked enemies and he can stack up to 20000 Overguard with his 2 (post-Hotfix 33.5.5). Molt Augmented will provide even more Power Strength at max stacks which will strengthen his abilities even further. On the note of red Archon Shards, you can replace [Power Drift] with Prime [Sure Footed] if you prefer not being knocked down.

Use two blue Archon Shards to give [Kullervo] an additional +100 Energy if [Equilibrium] isn't able to sustain your energy consumption. Use three blue shards for +150 Energy and a yellow shard for additional energy at spawn or energy effectiveness if you still find yourself super energy-hungry.

NOT recommended for endurance runs (Level 500+). Enemies at that point will be far too strong and will one-shot you regardless of your damage reduction or invulnerability frames.