Update Alpha 0.5 Test 2.2 (SMALL PATCH)

[New]:
- The secondary shooting mode is now utilised to slowly leech life from enemies, it's still better to utilise normal healing items around the map, but this offers an alternative after running out of them or for zones with no items.
- Added hitmarkers for the primary and secondary fire modes.

[Changes]:
- There's a health limit now.