# Mercenary Tier | Skill Gems - | - 1 | [[Explosive Grenade Launcher]], [[Fragmentation Rounds]], [[Armour Piercing Rounds]], [[Permafrost Bolts]] 3 | [[Flash Grenade]], [[High Velocity Rounds]], [[Incendiary Shot]] 5 | [[Gas Grenade]], [[Rapid Shot]], [[Ice Shards]], [[Galvanic Shards]] 7 | [[Ripwire Ballista]], [[Voltaic Grenade]], [[Explosive Shot]], [[Glacial Bolt]] 9 | [[Artillery Ballista]], [[Oil Grenade]], [[Stormblast Bolts]] 11 | [[Hailstorm Rounds]], [[Shockburst Rounds]], [[Emergency Reload]] 13 | [[Siege Cascade]], [[Plasma Blast]], [[Cluster Grenade]] <a href='#' class="js-modal-btn" data-video-id="mU7mLtj7nxU"></a>