Speluffy is a Researcher that boosts the mine industry.
Unlocking him automatically runs mines and multiplies the speed by 2.
He can be unlocked at rank 10.
It appears that Speluffy references Spelunky Guy who is the protagonist of Spelunky who descends into the mysteriously shifting caverns beneath the desert in search of fame and fortune.
| Speluffy |  Speed
|
 Science cost
|
Copies needed |
|---|---|---|---|
| Level 1 | x2 | Free | 1 |
| Level 2 | x4 | 50 | 2 |
| Level 3 | x8 | 100 | 5 |
| Level 4 | x16 | 200 | 10 |
| Level 5 | x32 | 300 | 20 |
| Level 6 | x64 | 400 | 50 |
| Level 7 | x128 | 1000 | 100 |
| Level 8 | x256 | 2000 | 200 |
| Level 9 | x512 | 4000 | 400 |
| Level 10 | x1024 | 8000 | 800 |
| Level 11 | x2048 | 20000 | 1000 |
| Level 12 | x4096 | 50000 | 2000 |
| Level 13 | x8192 | 100000 | 5000 |