I've been working on a MvM map (Aeon) with a modified medieval restriction to where Engineer can build using his PDA. It can only build low-tech machinery, mainly for use in Medieval. So, these are them:
Going clockwise, you've got your mini-sentry--a crossbow in a bucket. It overheals allies and can milk enemies.
Then the big gun, which is actually not a gun but a "ballista"--a wheelbarrow with a bow attached! It shoots bomb arrows, which can mini-crit on direct hits.
The center is just a Target Dummy. But wait! It also has the Wrangler shield--Yes, you heard right. It can even be ubered! Only for a short time after repairing to max HP, however.
The far two on the right are the grills. After a few seconds it spawns magical Meat--Which heals, and gives the consumer some useful buffs. A boost in speed, jump height, and attack rate are included. (However you might have a heart attack)
Going clockwise, you've got your mini-sentry--a crossbow in a bucket. It overheals allies and can milk enemies.
Then the big gun, which is actually not a gun but a "ballista"--a wheelbarrow with a bow attached! It shoots bomb arrows, which can mini-crit on direct hits.
The center is just a Target Dummy. But wait! It also has the Wrangler shield--Yes, you heard right. It can even be ubered! Only for a short time after repairing to max HP, however.
The far two on the right are the grills. After a few seconds it spawns magical Meat--Which heals, and gives the consumer some useful buffs. A boost in speed, jump height, and attack rate are included. (However you might have a heart attack)