Scrapper - Quickness Support Healer - MetaBattle

Quickness

Use 灌注炸弹, 强酸炸弹, 爆破机械, 功能机型 and the weapon skills listed below in combo fields for 急速. You have a decent amount of overcap, so you can afford to delay or skip these skills if necessary.

强酸炸弹 in particular is dangerous as it launches you backwards. This can be prevented by quickly weapon swapping mid-air.
功能机型 and 爆破机械 provide their own combo fields.
If you have any doubt about whether there is a combo field down, all 精英炮座 skills except 迫击炮弹 provide them.

Short Bow

Short Bow also comes with two combo fields:

Mace/Shield

蓄能猛攻
- 蓄能猛攻 will make you leap forward and cannot be cancelled, so keep that in mind before using it.
地磁护盾 ⇒ 磁力反转,

Healing

医疗包 is your bread and butter. Spam 医疗喷剂 to keep people topped off, using 绷带冲击, 体力爆发, and 自我包扎 for burst healing.
- Being in 医疗包 increases the healing effectiveness of all your skills, not just your 医疗包 skills.
影流精华 (Short Bow), 试剂炮弹 (in 精英炮座) and 超级试剂 (in 试剂枪) are additional healing skills you can use.
Use 治疗喷雾 and 灌注炸弹 off cooldown to keep up regeneration.
If using 卡拉科萨古物, any successful blast finisher will heal.
This build has many blast finishers, including 爆破机械, 灌注炸弹, 强酸炸弹, and 磁力反转. Blast the water field from 净化区域 or 试剂炮弹 for ~2000 instant healing per blast. Blast 闪光炮弹 or 超级试剂 to cleanse conditions.
Use 净化区域, 药雾熏蒸, or 超级试剂 for condition cleanse. For more condition-heavy fights you can consider bringing 净化机械 and 反作用力.

Mitigation

pulses barrier over a few seconds, making it especially effective if you know a large amount of damage is incoming.
also provides barrier.
on Short Bow and your Shield skills grant , as do and your . This is easily sufficient to maintain .
If is needed, use . If more is required, allows your to provide as well.
You can use to destroy projectiles. If you have your turrets will also spawn with reflective shields, but be careful of accidentally reflecting shards on Cairn or Matthias.