GRUNTY by gan jamin

Level 1
1 compressed slime
Slimy grenade has bigger area and longer range
2 sticky grenade
Slimy grenade slows to 80%
3 bribe
Kill minions to gain 3 stacks max 200 use 60 stacks to recruit mercenaries
Level 4
1 Go go go
Healing stim gives 50% move speed
2 bobbly bubbles
Bubbly jets spreads to an even bigger area
3 improvise
Increase the dmg you deal to non heroics by 100%
Level 7
1 happy fins
Whenever you kill a hero refresh you're abilities
2 zerg slime
Slimy grenade deals 150% extra dmg to minions mercenaries
3 combat shield
Gain a shield equal to 100% of you're health
Level 10
Read above
Level 13
1 special marine corps
whenever you take dmg also increase you're attack speed by 5%
2 vampiric assault
Drain health from enemies
3 dmg softener
Block 2 sources of dmg after 40 sec COOLDOWN
Level 16
1 bubble protection
Bubble jets also give shields to caught allies
2 slime rounds
Basic attacks slow enemies by 30%
3 pressure shot
Every 10 th attack on the same target deals 200% extra dmg
Level 20
1 healthy greens
heal allies for 4% of their maximum health and give small shields
2 mega tsunami
Bigger area and push enemies back
3 advanced health
Death timer decreased by 75%